Add 70/90 and 24/21, Solve 70/90 + 1 3/21 as a fraction

Add 70/90 and 24/21

1^st number: 70/90, 2^nd number: 1 3/21

70/90 + 24/21 is 121/63.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
70/90 = 70 × 7/90 × 7 = 490/630
Likewise, for the 2nd fraction, since 21 × 30 = 630,
24/21 = 24 × 30/21 × 30 = 720/630
Add the two like fractions:
490/630 + 720/630 = 490 + 720/630 = 1210/630
1210/630 simplified gives 121/63
So, 70/90 + 24/21 = 121/63
In mixed form: 158/63

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