## What is a Reciprocal?

In mathematics, the reciprocal, additionally known as multiplicative inverse, is the inverse of a number x. Denoted as 1/x or x-1. This method that the product of a number x and also its reciprocal yields 1.

You are watching: Reciprocal of -2/3

The inverse of a fraction a/b is denoted together (a/b)-1, which is b/a. This short article discusses the procedures on just how to uncover the reciprocal of a number, blended numbers, fractions and also decimals.

## How to discover Reciprocals?

The mutual of a number is merely the number that has actually been flipped or reverse upside-down. This entails transposing a number such the the numerator and also denominator are inserted at the bottom and top respectively.

To find the reciprocal of a totality number, just transform it right into a fraction in i beg your pardon the initial number is the denominator and also the molecule is 1.

Example 1

The mutual of 2/3 is 3/2.

The product the 2/3 and its mutual 3/2 is 1.

2/3 x 3/2 = 1

Example 2

The mutual of a whole number 7 is 1/7 since 7 x 1/7 = 1.

### How to discover the mutual of a blended Number?

In stimulate to find the mutual of a mixed fraction, convert it into improper fraction first and then apply the same preeminence we learnt above.

Example 3

Find the mutual of 4 1/2.

Solution

Convert a mixed portion into an improper fraction as calculate below.

4 1/2 = (4 x 2) + 1/ 2

= 9/2

Now upper and lower reversal the numerator and denominator of 9/2.Therefore, the solution for the mutual of 4 1/2 is 2/9.

### How to find the reciprocal of Decimal Numbers?

Like various other numbers, decimal number too have reciprocals. Calculating the reciprocal of a decimal number can be excellent in the adhering to ways:

Convert the decimal right into an tantamount fraction, for example, 0.25 = 1/4, and also therefore, the mutual is 4/1 = 4.You can additionally use a calculate to divide 1 through the fraction. Because that example, the reciprocal of 0.25 = 1/0.25 = 4

It have the right to be detailed that separating 1 through a portion is the exact same as multiplying the reciprocal of the number by 1. For example,

5 ÷ 1/4

= 5 x 4/1

= 20

Example 4

a. Find the mutual of 5

Solution

5 = 5/1

So, the mutual of 3 = 1/5

b. Find the reciprocal of 1/4

Solution

To find the mutual of 1/4, invert the numerator and also denominator.

The mutual of 1/4 = 4

c. Identify the reciprocal of 10/3

Solution

Step 1:

To uncover the reciprocal of 10/3, flip the numerator and denominator. The mutual = 3/10.

Example 5

If 4/7 the a number x is 84. What is the value of x?

Solution4/7 the a number x = 84Write the mathematics equation:

(4/7) x = 84

Multiply both political parties by the mutual of 4/7Number x = 84 × 7/4

= 21 × 7= 147And thus, the number x is 147.

Example 6

A half of the student in a college space boys, 3/5 that these boys take science courses and the remainder take humanities. What portion of the guys take humanities?

Solution

Fraction of guys in the college = 1/2

Fraction the boys that take sciences = 3/5 that 1/2

= 3/5 × 1/2

= 3 × 1/5 × 2

= 3/10

Therefore, 3/10 of the guys take humanities.

Example 7

Pedro has actually written three-fifth that his 75 paged study work. How many pages room left to complete writing his research?

SolutionNumber the pages written = 3/5 the 75= 3/5 × 7

= 45 pages.Number the pages left= 75 – 45.= 30 pages.

See more: What Channel Is Abc On Dish Network Texas, Find Your Local Dish Channels

Example 8

A herd of cows in a farm yard produces 99 liters the milk daily. If each cow produce one-third of total milk developed in a day. How plenty of cows are in the farm yard if 7700 liters of milk is produced weekly.

SolutionA herd the cows produces 99 liters of milk daily.One cow to produce 1/3 of full milk daily = 1/3 that 99Therefore, one cow produces 11 liters.Total number of animals in the farm= (7700/7) ÷ 11= 100 cows