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

Add 7/90 and 42/10

1^st number: 7/90, 2^nd number: 4 2/10

7/90 + 42/10 is 77/18.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 10 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 90 × 1 = 90,
7/90 = 7 × 1/90 × 1 = 7/90
Likewise, for the 2nd fraction, since 10 × 9 = 90,
42/10 = 42 × 9/10 × 9 = 378/90
Add the two like fractions:
7/90 + 378/90 = 7 + 378/90 = 385/90
385/90 simplified gives 77/18
So, 7/90 + 42/10 = 77/18
In mixed form: 45/18

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