# What is 2/9 - 5/7? 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 2/9 and 5/7.

2/9 - 5/7 = -31/63 in fraction form

2/9 - 5/7 = -0.4921 in decimal form
This calculator, formula, step by step calculation and associated information to find the difference between 2/9 and 5/7 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 2/9-5/7?

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 5/7 from 2/9. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 2/9 minus 5/7.
1. LCM method
2. Cross multiplication method.

Problem and Workout - LCM Method
What is 2/9 minus 5/7 as a fraction by subtraction using LCM method?

step 1 Address formula, input parameters and values.
Input parameters and values:
2/9 & 5/7
2/9-5/7 = ?

step 2 For unequal denominators, find the LCM (least common multiple) for both denominators
The LCM for 9 and 7 is 63.

step 3 To have the common denominator, multiply the LCM with both numerator and denominator
=(2 x 63)/(9 x 63)-(5 x 63)/(7 x 63)
=14/63-45/63
=(14 - 45)/63

step 4 Find difference between numerators and rewrite it in a single form.
=-31/63
2/9-5/7=-31/63

By using LCM method, -31/63 is the equivalent fraction by subtracting 5/7 from 2/9.

Problem and Workout - Cross Multiplication Method
step 1 Address formula and input values.
Input values:
2/9 & 5/7
2/9 - 5/7 = ?

step 2 Cross multiply both numerator and denominator, multiply both denominators and rewrite as below
= (2 x 7) - (5 x 9)/(9 x 7)

step 3 Simplify and rewrite the fraction
= (14 - 45)/63
2/9-5/7 = -31/63
By using cross multiplication method, -31/63 is the difference between two fractions 2/9 and 5/7. 