What is 1/4 - 1/8?

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 1/8 from 1/4. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 1/4 minus 1/8.
1. LCM method
2. Cross multiplication method.

Problem & Workout - LCM Method
What is 1/4 minus 1/8 as a fraction by subtraction using LCM method?

step 1 Address formula, input parameters & values.
Input parameters & values:
1/4 & 1/8
1/4-1/8 = ?

step 2 For unequal denominators, find the LCM (least common multiple) for both denominators
The LCM for 4 and 8 is 8.

step 3 To have the common denominator, multiply the LCM with both numerator & denominator
=(1 x 8)/(4 x 8)-(1 x 8)/(8 x 8)
=2/8-1/8
=(2 - 1)/8

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

By using LCM method, 1/8 is the equivalent fraction by subtracting 1/8 from 1/4.

Problem & Workout - Cross Multiplication Method
step 1 Address formula, input parameters & values.
Input parameters & values:
1/4 & 1/8
1/4 - 1/8 = ?

step 2 Cross multiply both numerator & denominator, multiply both denominators and rewrite as below
= (1 x 8) - (1 x 4)/(4 x 8)

step 3 Simplify & rewrite the fraction
= (8 - 4)/32
= 4/32
= 1/8
1/4-1/8 = 1/8
By using cross multiplication method, 1/8 is the difference between two fractions 1/4 and 1/8.