Add 90/21 and 4/18, Solve 4 6/21 + 4/18 as a fraction

Add 90/21 and 4/18

1^st number: 4 6/21, 2^nd number: 4/18

90/21 + 4/18 is 284/63.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
90/21 = 90 × 6/21 × 6 = 540/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
4/18 = 4 × 7/18 × 7 = 28/126
Add the two like fractions:
540/126 + 28/126 = 540 + 28/126 = 568/126
568/126 simplified gives 284/63
So, 90/21 + 4/18 = 284/63
In mixed form: 432/63

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