# What is 9/10 - 7/8? getcalc.com's two fractions subtraction calculator is an online basic math function tool to find what's the equivalent fraction for difference between two fractional numbers with different, unequal or unlike denominators 9/10 and 7/8.

9/10 - 7/8 = 2/80 as simplified as 1/40 in fraction form

9/10 - 7/8 = 0.025 in decimal form
This calculator, formula, step by step calculation and associated information to find the difference between 9/10 and 7/8 may help students, teachers, parents or professionals to learn, teach, practice or verify such two fractions subtraction calculations efficiently.

## How to Find Equivalent Fraction for 9/10-7/8?

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 7/8 from 9/10. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 9/10 minus 7/8.
1. LCM method
2. Cross multiplication method.

Problem and Workout - LCM Method
What is 9/10 minus 7/8 as a fraction by subtraction using LCM method?

step 1 Address formula, input parameters and values.
Input parameters and values:
9/10 & 7/8
9/10-7/8 = ?

step 2 For unequal denominators, find the LCM (least common multiple) for both denominators
The LCM for 10 and 8 is 40.

step 3 To have the common denominator, multiply the LCM with both numerator and denominator
=(9 x 40)/(10 x 40)-(7 x 40)/(8 x 40)
=36/40-35/40
=(36 - 35)/40

step 4 Find difference between numerators and rewrite it in a single form.
=1/40
9/10-7/8=1/40

By using LCM method, 1/40 is the equivalent fraction by subtracting 7/8 from 9/10.

Problem and Workout - Cross Multiplication Method
step 1 Address formula and input values.
Input values:
9/10 & 7/8
9/10 - 7/8 = ?

step 2 Cross multiply both numerator and denominator, multiply both denominators and rewrite as below
= (9 x 8) - (7 x 10)/(10 x 8)

step 3 Simplify and rewrite the fraction
= (72 - 70)/80
= 2/80
= 1/40
9/10-7/8 = 1/40
By using cross multiplication method, 1/40 is the difference between two fractions 9/10 and 7/8. 