Add 42/10 and 90/7, Solve 4 2/10 + 12 6/7 as a fraction

Add 42/10 and 90/7

1^st number: 4 2/10, 2^nd number: 12 6/7

42/10 + 90/7 is 597/35.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70

Next, find the equivalent fraction of both fractional numbers with denominator 70
For the 1st fraction, since 10 × 7 = 70,
42/10 = 42 × 7/10 × 7 = 294/70
Likewise, for the 2nd fraction, since 7 × 10 = 70,
90/7 = 90 × 10/7 × 10 = 900/70
Add the two like fractions:
294/70 + 900/70 = 294 + 900/70 = 1194/70
1194/70 simplified gives 597/35
So, 42/10 + 90/7 = 597/35
In mixed form: 172/35

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