Add 12/72 and 80/70, Solve 12/72 + 1 10/70 as a fraction

Add 12/72 and 80/70

1^st number: 12/72, 2^nd number: 1 10/70

12/72 + 80/70 is 55/42.

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

Next, find the equivalent fraction of both fractional numbers with denominator 2520
For the 1st fraction, since 72 × 35 = 2520,
12/72 = 12 × 35/72 × 35 = 420/2520
Likewise, for the 2nd fraction, since 70 × 36 = 2520,
80/70 = 80 × 36/70 × 36 = 2880/2520
Add the two like fractions:
420/2520 + 2880/2520 = 420 + 2880/2520 = 3300/2520
3300/2520 simplified gives 55/42
So, 12/72 + 80/70 = 55/42
In mixed form: 113/42

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