Add 60/84 and 70/40, Solve 60/84 + 1 30/40 as a fraction

Add 60/84 and 70/40

1^st number: 60/84, 2^nd number: 1 30/40

60/84 + 70/40 is 69/28.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 84 × 10 = 840,
60/84 = 60 × 10/84 × 10 = 600/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
70/40 = 70 × 21/40 × 21 = 1470/840
Add the two like fractions:
600/840 + 1470/840 = 600 + 1470/840 = 2070/840
2070/840 simplified gives 69/28
So, 60/84 + 70/40 = 69/28
In mixed form: 213/28

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