Add 42/9 and 70/49, Solve 4 6/9 + 1 21/49 as a fraction

Add 42/9 and 70/49

1^st number: 4 6/9, 2^nd number: 1 21/49

42/9 + 70/49 is 128/21.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 49 is 441

Next, find the equivalent fraction of both fractional numbers with denominator 441
For the 1st fraction, since 9 × 49 = 441,
42/9 = 42 × 49/9 × 49 = 2058/441
Likewise, for the 2nd fraction, since 49 × 9 = 441,
70/49 = 70 × 9/49 × 9 = 630/441
Add the two like fractions:
2058/441 + 630/441 = 2058 + 630/441 = 2688/441
2688/441 simplified gives 128/21
So, 42/9 + 70/49 = 128/21
In mixed form: 62/21

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