Add 40/15 and 90/84, Solve 2 10/15 + 1 6/84 as a fraction

Add 40/15 and 90/84

1^st number: 2 10/15, 2^nd number: 1 6/84

40/15 + 90/84 is 157/42.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 15 × 28 = 420,
40/15 = 40 × 28/15 × 28 = 1120/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420
Add the two like fractions:
1120/420 + 450/420 = 1120 + 450/420 = 1570/420
1570/420 simplified gives 157/42
So, 40/15 + 90/84 = 157/42
In mixed form: 331/42

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