Add 70/75 and 81/60, Solve 70/75 + 1 21/60 as a fraction

Add 70/75 and 81/60

1^st number: 70/75, 2^nd number: 1 21/60

70/75 + 81/60 is 137/60.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 60 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 75 × 4 = 300,
70/75 = 70 × 4/75 × 4 = 280/300
Likewise, for the 2nd fraction, since 60 × 5 = 300,
81/60 = 81 × 5/60 × 5 = 405/300
Add the two like fractions:
280/300 + 405/300 = 280 + 405/300 = 685/300
685/300 simplified gives 137/60
So, 70/75 + 81/60 = 137/60
In mixed form: 217/60

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