Add 40/84 and 90/63, Solve 40/84 + 1 27/63 as a fraction

Add 40/84 and 90/63

1^st number: 40/84, 2^nd number: 1 27/63

40/84 + 90/63 is 40/21.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 84 × 3 = 252,
40/84 = 40 × 3/84 × 3 = 120/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
90/63 = 90 × 4/63 × 4 = 360/252
Add the two like fractions:
120/252 + 360/252 = 120 + 360/252 = 480/252
480/252 simplified gives 40/21
So, 40/84 + 90/63 = 40/21
In mixed form: 119/21

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