Add 42/12 and 7/90, Solve 3 6/12 + 7/90 as a fraction

Add 42/12 and 7/90

1^st number: 3 6/12, 2^nd number: 7/90

42/12 + 7/90 is 161/45.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180

Next, find the equivalent fraction of both fractional numbers with denominator 180
For the 1st fraction, since 12 × 15 = 180,
42/12 = 42 × 15/12 × 15 = 630/180
Likewise, for the 2nd fraction, since 90 × 2 = 180,
7/90 = 7 × 2/90 × 2 = 14/180
Add the two like fractions:
630/180 + 14/180 = 630 + 14/180 = 644/180
644/180 simplified gives 161/45
So, 42/12 + 7/90 = 161/45
In mixed form: 326/45

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