Add 70/49 and 21/72, Solve 1 21/49 + 21/72 as a fraction

Add 70/49 and 21/72

1^st number: 1 21/49, 2^nd number: 21/72

70/49 + 21/72 is 289/168.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 72 is 3528

Next, find the equivalent fraction of both fractional numbers with denominator 3528
For the 1st fraction, since 49 × 72 = 3528,
70/49 = 70 × 72/49 × 72 = 5040/3528
Likewise, for the 2nd fraction, since 72 × 49 = 3528,
21/72 = 21 × 49/72 × 49 = 1029/3528
Add the two like fractions:
5040/3528 + 1029/3528 = 5040 + 1029/3528 = 6069/3528
6069/3528 simplified gives 289/168
So, 70/49 + 21/72 = 289/168
In mixed form: 1121/168

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