Add 90/84 and 7/10, Solve 1 6/84 + 7/10 as a fraction

Add 90/84 and 7/10

1^st number: 1 6/84, 2^nd number: 7/10

90/84 + 7/10 is 62/35.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420
Likewise, for the 2nd fraction, since 10 × 42 = 420,
7/10 = 7 × 42/10 × 42 = 294/420
Add the two like fractions:
450/420 + 294/420 = 450 + 294/420 = 744/420
744/420 simplified gives 62/35
So, 90/84 + 7/10 = 62/35
In mixed form: 127/35

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad