# What is 3/4 - 9/2? 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 3/4 and 9/2.

3/4 - 9/2 = -30/8 as simplified as -15/4 in fraction form

3/4 - 9/2 = -3.75 in decimal form
This calculator, formula, step by step calculation and associated information to find the difference between 3/4 and 9/2 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 3/4-9/2?

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 9/2 from 3/4. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 3/4 minus 9/2.
1. LCM method
2. Cross multiplication method.

Problem and Workout - LCM Method
What is 3/4 minus 9/2 as a fraction by subtraction using LCM method?

step 1 Address formula, input parameters and values.
Input parameters and values:
3/4 & 9/2
3/4-9/2 = ?

step 2 For unequal denominators, find the LCM (least common multiple) for both denominators
The LCM for 4 and 2 is 4.

step 3 To have the common denominator, multiply the LCM with both numerator and denominator
=(3 x 4)/(4 x 4)-(9 x 4)/(2 x 4)
=3/4-18/4
=(3 - 18)/4

step 4 Find difference between numerators and rewrite it in a single form.
=-15/4
3/4-9/2=-15/4

By using LCM method, -15/4 is the equivalent fraction by subtracting 9/2 from 3/4.

Problem and Workout - Cross Multiplication Method
step 1 Address formula and input values.
Input values:
3/4 & 9/2
3/4 - 9/2 = ?

step 2 Cross multiply both numerator and denominator, multiply both denominators and rewrite as below
= (3 x 2) - (9 x 4)/(4 x 2)

step 3 Simplify and rewrite the fraction
= (6 - 36)/8
= -30/8
= -15/4
3/4-9/2 = -15/4
By using cross multiplication method, -15/4 is the difference between two fractions 3/4 and 9/2. 