Add 18/90 and 30/7, Solve 18/90 + 4 2/7 as a fraction

Add 18/90 and 30/7

1^st number: 18/90, 2^nd number: 4 2/7

18/90 + 30/7 is 157/35.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
18/90 = 18 × 7/90 × 7 = 126/630
Likewise, for the 2nd fraction, since 7 × 90 = 630,
30/7 = 30 × 90/7 × 90 = 2700/630
Add the two like fractions:
126/630 + 2700/630 = 126 + 2700/630 = 2826/630
2826/630 simplified gives 157/35
So, 18/90 + 30/7 = 157/35
In mixed form: 417/35

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