# What is 2/9 - 9/8? 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 2/9 and 9/8.

2/9 - 9/8 = -65/72 in fraction form

2/9 - 9/8 = -0.9028 in decimal form
This calculator, formula, step by step calculation and associated information to find the difference between 2/9 and 9/8 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 2/9-9/8?

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 9/8 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 9/8.
1. LCM method
2. Cross multiplication method.

Problem and Workout - LCM Method
What is 2/9 minus 9/8 as a fraction by subtraction using LCM method?

step 1 Address formula, input parameters and values.
Input parameters and values:
2/9 & 9/8
2/9-9/8 = ?

step 2 For unequal denominators, find the LCM (least common multiple) for both denominators
The LCM for 9 and 8 is 72.

step 3 To have the common denominator, multiply the LCM with both numerator and denominator
=(2 x 72)/(9 x 72)-(9 x 72)/(8 x 72)
=16/72-81/72
=(16 - 81)/72

step 4 Find difference between numerators and rewrite it in a single form.
=-65/72
2/9-9/8=-65/72

By using LCM method, -65/72 is the equivalent fraction by subtracting 9/8 from 2/9.

Problem and Workout - Cross Multiplication Method
step 1 Address formula and input values.
Input values:
2/9 & 9/8
2/9 - 9/8 = ?

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

step 3 Simplify and rewrite the fraction
= (16 - 81)/72
2/9-9/8 = -65/72
By using cross multiplication method, -65/72 is the difference between two fractions 2/9 and 9/8. 