Add 90/5 and 40/84, Solve 18 0/5 + 40/84 as a fraction

Add 90/5 and 40/84

1^st number: 18 0/5, 2^nd number: 40/84

90/5 + 40/84 is 388/21.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 5 × 84 = 420,
90/5 = 90 × 84/5 × 84 = 7560/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
40/84 = 40 × 5/84 × 5 = 200/420
Add the two like fractions:
7560/420 + 200/420 = 7560 + 200/420 = 7760/420
7760/420 simplified gives 388/21
So, 90/5 + 40/84 = 388/21
In mixed form: 1810/21

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