Add 70/21 and 60/72, Solve 3 7/21 + 60/72 as a fraction

Add 70/21 and 60/72

1^st number: 3 7/21, 2^nd number: 60/72

70/21 + 60/72 is 25/6.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 21 × 24 = 504,
70/21 = 70 × 24/21 × 24 = 1680/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
60/72 = 60 × 7/72 × 7 = 420/504
Add the two like fractions:
1680/504 + 420/504 = 1680 + 420/504 = 2100/504
2100/504 simplified gives 25/6
So, 70/21 + 60/72 = 25/6
In mixed form: 41/6

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