# What is 1/2 - 1/8?

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 1/2 and 1/8.

1/2 - 1/8 = 6/16 as simplified as 3/8 in fraction form

1/2 - 1/8 = 0.375 in decimal form

This calculator, formula, step by step calculation and associated information to find the difference between 1/2 & 1/8 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 1/2-1/8?

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 1/2. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 1/2 minus 1/8.

1. LCM method

2. Cross multiplication method.

__Problem & Workout - LCM Method__

What is 1/2 minus 1/8 as a fraction by subtraction using LCM method?

step 1 Address *formula*, input parameters & values.

Input parameters & values:

1/2 & 1/8

1/2-1/8 = ?

step 2 For unequal denominators, find the LCM (least common multiple) for both denominators

The LCM for 2 and 8 is 8.

step 3 To have the common denominator, multiply the LCM with both numerator & denominator

=(1 x 8)/(2 x 8)-(1 x 8)/(8 x 8)

=4/8-1/8

=(4 - 1)/8

step 4 Find difference between numerators and rewrite it in a single form.

=3/8

1/2-1/8=3/8

By using LCM method, **3/8** is the equivalent fraction by subtracting 1/8 from 1/2.

__Problem & Workout - Cross Multiplication Method__

step 1 Address formula, input parameters & values.

Input parameters & values:

1/2 & 1/8

1/2 - 1/8 = ?

step 2 Cross multiply both numerator & denominator, multiply both denominators and rewrite as below

= (1 x 8) - (1 x 2)/(2 x 8)

step 3 Simplify & rewrite the fraction

= (8 - 2)/16

= 6/16

= 3/8

1/2-1/8 = 3/8

By using cross multiplication method, **3/8** is the difference between two fractions 1/2 and 1/8.