Add 7/42 and 90/70, Solve 7/42 + 1 20/70 as a fraction

Add 7/42 and 90/70

1^st number: 7/42, 2^nd number: 1 20/70

7/42 + 90/70 is 61/42.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210
Likewise, for the 2nd fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210
Add the two like fractions:
35/210 + 270/210 = 35 + 270/210 = 305/210
305/210 simplified gives 61/42
So, 7/42 + 90/70 = 61/42
In mixed form: 119/42

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