Add 70/42 and 21/36, Solve 1 28/42 + 21/36 as a fraction

Add 70/42 and 21/36

1^st number: 1 28/42, 2^nd number: 21/36

70/42 + 21/36 is 9/4.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 42 × 6 = 252,
70/42 = 70 × 6/42 × 6 = 420/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252
Add the two like fractions:
420/252 + 147/252 = 420 + 147/252 = 567/252
567/252 simplified gives 9/4
So, 70/42 + 21/36 = 9/4
In mixed form: 21/4

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