Add 90/5 and 12/42, Solve 18 0/5 + 12/42 as a fraction

Add 90/5 and 12/42

1^st number: 18 0/5, 2^nd number: 12/42

90/5 + 12/42 is 128/7.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 5 × 42 = 210,
90/5 = 90 × 42/5 × 42 = 3780/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
12/42 = 12 × 5/42 × 5 = 60/210
Add the two like fractions:
3780/210 + 60/210 = 3780 + 60/210 = 3840/210
3840/210 simplified gives 128/7
So, 90/5 + 12/42 = 128/7
In mixed form: 182/7

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