Add 40/10 and 7/42, Solve 4 0/10 + 7/42 as a fraction

Add 40/10 and 7/42

1^st number: 4 0/10, 2^nd number: 7/42

40/10 + 7/42 is 25/6.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
40/10 = 40 × 21/10 × 21 = 840/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210
Add the two like fractions:
840/210 + 35/210 = 840 + 35/210 = 875/210
875/210 simplified gives 25/6
So, 40/10 + 7/42 = 25/6
In mixed form: 41/6

MathStep (Works offline)

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