Add 80/42 and 7/20, Solve 1 38/42 + 7/20 as a fraction

Add 80/42 and 7/20

1^st number: 1 38/42, 2^nd number: 7/20

80/42 + 7/20 is 947/420.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 42 × 10 = 420,
80/42 = 80 × 10/42 × 10 = 800/420
Likewise, for the 2nd fraction, since 20 × 21 = 420,
7/20 = 7 × 21/20 × 21 = 147/420
Add the two like fractions:
800/420 + 147/420 = 800 + 147/420 = 947/420
So, 80/42 + 7/20 = 947/420
In mixed form: 2107/420

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