Add 42/6 and 90/21, Solve 7 0/6 + 4 6/21 as a fraction

Add 42/6 and 90/21

1^st number: 7 0/6, 2^nd number: 4 6/21

42/6 + 90/21 is 79/7.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 6 × 7 = 42,
42/6 = 42 × 7/6 × 7 = 294/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
90/21 = 90 × 2/21 × 2 = 180/42
Add the two like fractions:
294/42 + 180/42 = 294 + 180/42 = 474/42
474/42 simplified gives 79/7
So, 42/6 + 90/21 = 79/7
In mixed form: 112/7

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