Add 81/70 and 36/60, Solve 1 11/70 + 36/60 as a fraction

Add 81/70 and 36/60

1^st number: 1 11/70, 2^nd number: 36/60

81/70 + 36/60 is 123/70.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 70 × 6 = 420,
81/70 = 81 × 6/70 × 6 = 486/420
Likewise, for the 2nd fraction, since 60 × 7 = 420,
36/60 = 36 × 7/60 × 7 = 252/420
Add the two like fractions:
486/420 + 252/420 = 486 + 252/420 = 738/420
738/420 simplified gives 123/70
So, 81/70 + 36/60 = 123/70
In mixed form: 153/70

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