Add 80/14 and 21/90, Solve 5 10/14 + 21/90 as a fraction

Add 80/14 and 21/90

1^st number: 5 10/14, 2^nd number: 21/90

80/14 + 21/90 is 1249/210.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 14 × 45 = 630,
80/14 = 80 × 45/14 × 45 = 3600/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630
Add the two like fractions:
3600/630 + 147/630 = 3600 + 147/630 = 3747/630
3747/630 simplified gives 1249/210
So, 80/14 + 21/90 = 1249/210
In mixed form: 5199/210

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