Add 54/42 and 7/10, Solve 1 12/42 + 7/10 as a fraction

Add 54/42 and 7/10

1^st number: 1 12/42, 2^nd number: 7/10

54/42 + 7/10 is 139/70.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
54/42 = 54 × 5/42 × 5 = 270/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
7/10 = 7 × 21/10 × 21 = 147/210
Add the two like fractions:
270/210 + 147/210 = 270 + 147/210 = 417/210
417/210 simplified gives 139/70
So, 54/42 + 7/10 = 139/70
In mixed form: 169/70

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