Add 60/70 and 84/72, Solve 60/70 + 1 12/72 as a fraction

Add 60/70 and 84/72

1^st number: 60/70, 2^nd number: 1 12/72

60/70 + 84/72 is 85/42.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 72 is 2520

Next, find the equivalent fraction of both fractional numbers with denominator 2520
For the 1st fraction, since 70 × 36 = 2520,
60/70 = 60 × 36/70 × 36 = 2160/2520
Likewise, for the 2nd fraction, since 72 × 35 = 2520,
84/72 = 84 × 35/72 × 35 = 2940/2520
Add the two like fractions:
2160/2520 + 2940/2520 = 2160 + 2940/2520 = 5100/2520
5100/2520 simplified gives 85/42
So, 60/70 + 84/72 = 85/42
In mixed form: 21/42

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