Add 60/42 and 72/80, Solve 1 18/42 + 72/80 as a fraction

Add 60/42 and 72/80

1^st number: 1 18/42, 2^nd number: 72/80

60/42 + 72/80 is 163/70.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 42 × 40 = 1680,
60/42 = 60 × 40/42 × 40 = 2400/1680
Likewise, for the 2nd fraction, since 80 × 21 = 1680,
72/80 = 72 × 21/80 × 21 = 1512/1680
Add the two like fractions:
2400/1680 + 1512/1680 = 2400 + 1512/1680 = 3912/1680
3912/1680 simplified gives 163/70
So, 60/42 + 72/80 = 163/70
In mixed form: 223/70

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