# What is 3/5 + 1/8? getcalc.com's two fractions addition calculator is an online basic math function tool to find what's the equivalent fraction for sum of two fractional numbers with different, unequal or unlike denominators 3/5 and 1/8.

3/5 + 1/8 = 29/40 in fraction form

3/5 + 1/8 = 0.725 in decimal form
This calculator, formula, step by step calculation and associated information for adding 3/5 and 1/8 may help students, teachers, parents or professionals to learn, teach, practice or verify such two fractions addition calculations efficiently.

## How to Find Equivalent Fraction for 3/5+1/8?

The below workout with step by step calculation shows how to find the equivalent fraction between 3/5 and 1/8 by adding two fractions with different, unequal or unlike denominators. The sum in fraction form for 3/5 plus 1/8 can be obtained by using anyone of the two methods below.
1. LCM method
2. Cross multiplication method.

Problem and Workout - LCM Method
What is 3/5 plus 1/8 as a fraction by addition using LCM method?

step 1 Address formula, input parameters and values.
Input parameters and values:
3/5 & 1/8
3/5+1/8 = ?

step 2 For unequal denominators, find the LCM (least common multiple) for both denominators
The LCM for 5 and 8 is 40.

step 3 To have the common denominator, multiply the LCM with both numerator and denominator
=(3 x 40)/(5 x 40)+(1 x 40)/(8 x 40)
=24/40+5/40
=(24 + 5)/40

step 4 Add both numerator and rewrite it in a single form.
=29/40
3/5+1/8=29/40

By using LCM method, 29/40 is the equivalent fraction by adding 3/5 and 1/8.

Problem and Workout - Cross Multiplication Method
step 1 Address formula and input values.
Input values:
3/5 & 1/8
3/5 + 1/8 = ?

step 2 Cross multiply both numerator and denominator, multiply both denominators and rewrite as below
= (3 x 8) + (1 x 5)/(5 x 8)

step 3 Simplify and rewrite the fraction
= (24 + 5)/40
3/5+1/8 = 29/40
By using cross multiplication method, 29/40 is the addition between two fractions 3/5 and 1/8. 