Add 40/70 and 42/6, Solve 40/70 + 7 0/6 as a fraction

Add 40/70 and 42/6

1^st number: 40/70, 2^nd number: 7 0/6

40/70 + 42/6 is 53/7.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 70 × 3 = 210,
40/70 = 40 × 3/70 × 3 = 120/210
Likewise, for the 2nd fraction, since 6 × 35 = 210,
42/6 = 42 × 35/6 × 35 = 1470/210
Add the two like fractions:
120/210 + 1470/210 = 120 + 1470/210 = 1590/210
1590/210 simplified gives 53/7
So, 40/70 + 42/6 = 53/7
In mixed form: 74/7

MathStep (Works offline)

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