Add 70/15 and 12/84, Solve 4 10/15 + 12/84 as a fraction

Add 70/15 and 12/84

1^st number: 4 10/15, 2^nd number: 12/84

70/15 + 12/84 is 101/21.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 15 × 28 = 420,
70/15 = 70 × 28/15 × 28 = 1960/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
12/84 = 12 × 5/84 × 5 = 60/420
Add the two like fractions:
1960/420 + 60/420 = 1960 + 60/420 = 2020/420
2020/420 simplified gives 101/21
So, 70/15 + 12/84 = 101/21
In mixed form: 417/21

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