Add 90/84 and 75/80, Solve 1 6/84 + 75/80 as a fraction

Add 90/84 and 75/80

1^st number: 1 6/84, 2^nd number: 75/80

90/84 + 75/80 is 225/112.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 84 × 20 = 1680,
90/84 = 90 × 20/84 × 20 = 1800/1680
Likewise, for the 2nd fraction, since 80 × 21 = 1680,
75/80 = 75 × 21/80 × 21 = 1575/1680
Add the two like fractions:
1800/1680 + 1575/1680 = 1800 + 1575/1680 = 3375/1680
3375/1680 simplified gives 225/112
So, 90/84 + 75/80 = 225/112
In mixed form: 21/112

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