Add 72/7 and 80/90, Solve 10 2/7 + 80/90 as a fraction

Add 72/7 and 80/90

1^st number: 10 2/7, 2^nd number: 80/90

72/7 + 80/90 is 704/63.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 7 × 90 = 630,
72/7 = 72 × 90/7 × 90 = 6480/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
80/90 = 80 × 7/90 × 7 = 560/630
Add the two like fractions:
6480/630 + 560/630 = 6480 + 560/630 = 7040/630
7040/630 simplified gives 704/63
So, 72/7 + 80/90 = 704/63
In mixed form: 1111/63

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