What is 8/5 - 2/10?

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 2/10 from 8/5. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 8/5 minus 2/10.
1. LCM method
2. Cross multiplication method.

Problem and Workout - LCM Method
What is 8/5 minus 2/10 as a fraction by subtraction using LCM method?

step 1 Address formula, input parameters and values.
Input parameters and values:
8/5 & 2/10
8/5-2/10 = ?

step 2 For unequal denominators, find the LCM (least common multiple) for both denominators
The LCM for 5 and 10 is 10.

step 3 To have the common denominator, multiply the LCM with both numerator and denominator
=(8 x 10)/(5 x 10)-(2 x 10)/(10 x 10)
=16/10-2/10
=(16 - 2)/10

step 4 Find difference between numerators and rewrite it in a single form.
= 14/10
=7/5
8/5-2/10=7/5

By using LCM method, 7/5 is the equivalent fraction by subtracting 2/10 from 8/5.

Problem and Workout - Cross Multiplication Method
step 1 Address formula and input values.
Input values:
8/5 & 2/10
8/5 - 2/10 = ?

step 2 Cross multiply both numerator and denominator, multiply both denominators and rewrite as below
= (8 x 10) - (2 x 5)/(5 x 10)

step 3 Simplify and rewrite the fraction
= (80 - 10)/50
= 70/50
= 7/5
8/5-2/10 = 7/5
By using cross multiplication method, 7/5 is the difference between two fractions 8/5 and 2/10.