# What is 9/10 minus 2/5?

9/10 - 2/5 as a fraction provides the detailed information about what is the difference between 9/10 and 2/5 in fraction and decimal form, and the answer with steps to understand how it is being calculated by using different methods.**9/10-2/5 equals to**

9/10 - 2/5 = 1/2

Hence, 9/10 - 2/5 is equal to **1/2**.__where__

9/10 is a fraction as a minuend,

2/5 is a fraction as a subtrahend,

1/2 is the difference between 9/10 and 2/5.**9/10 minus 2/5 as a decimal**

9/10 - 2/5 = 1/2

1/2 = 0.5

Hence, 9/10-2/5 can be written as **0.5** in decimal.__where__

0.5 is the difference between 9/10 and 2/5.

## How-to: 9/10 - 2/5 = ?

1. LCM method,

2. Cross multiplication method.

__Problem and Workout - LCM Method:__

What is 9/10 minus 2/5 as a fraction?

step 1 Observe the input parameters and what to be found:__Input:__

Fraction A: 9/10

Fraction B: 2/5__What to be found?__

9/10-2/5 = ?

Find what's the difference between 9/10 and 2/5.

step 2 Compare the denominators of fractions 9/10 and 2/5 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 9/10 and 2/5 are not equal, it is said to be __unlike fractions subtraction__.

step 3For unlike fractions subtraction, find the LCM (least common multiple) of both denominators of fractions 9/10 and 2/5:

The LCM of 10 and 5 is 10.

step 4 Write the fractions 9/10 and 2/5 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.

=9/10-2/5

=(9 x 10)/(10 x 10)-(2 x 10)/(5 x 10)

step 5 Simplify the expression to have common denominator:

=9/10-4/10

step 6 Take the common values out and rewrite the above expression like the below:

=1/10 x (9/1-4/1)

=1/10 x (9 - 4)

step 7Simplify the above expression further:

=1/10 x 5

= *5/10*

=1/2

9/10-2/5=1/2

Hence,

9/10 minus 2/5 equals to **1/2** in fraction.

__Problem and Workout - Cross Multiplication Method__

step 1 Observe the input parameters and what to be found:__Input:__

Fraction A: 9/10

Fraction B: 2/5__What to be found?__

9/10-2/5 = ?

Find what's the difference between 9/10 and 2/5.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (9 x 5), find the product of numerator of Fraction B and denominator of Fraction A (2 x 10), and find the product of both denominators of Fraction A and Fraction B (10 x 5) and rewrite the equation as like the below:

= (9 x 5) - (2 x 10)/(10 x 5)

step 3 Simplify and rewrite the fraction:

= (45 - 20)/50

= 25/50

= 1/2

9/10-2/5 = 1/2

Hence,

9/10 minus 2/5 = **1/2**