Add 72/42 and 90/6, Solve 1 30/42 + 15 0/6 as a fraction

Add 72/42 and 90/6

1^st number: 1 30/42, 2^nd number: 15 0/6

72/42 + 90/6 is 117/7.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 6 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 42 × 1 = 42,
72/42 = 72 × 1/42 × 1 = 72/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
90/6 = 90 × 7/6 × 7 = 630/42
Add the two like fractions:
72/42 + 630/42 = 72 + 630/42 = 702/42
702/42 simplified gives 117/7
So, 72/42 + 90/6 = 117/7
In mixed form: 165/7

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