Add 80/75 and 21/90, Solve 1 5/75 + 21/90 as a fraction

Add 80/75 and 21/90

1^st number: 1 5/75, 2^nd number: 21/90

80/75 + 21/90 is 13/10.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 75 × 6 = 450,
80/75 = 80 × 6/75 × 6 = 480/450
Likewise, for the 2nd fraction, since 90 × 5 = 450,
21/90 = 21 × 5/90 × 5 = 105/450
Add the two like fractions:
480/450 + 105/450 = 480 + 105/450 = 585/450
585/450 simplified gives 13/10
So, 80/75 + 21/90 = 13/10
In mixed form: 13/10

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