Add 72/90 and 70/63, Solve 72/90 + 1 7/63 as a fraction

Add 72/90 and 70/63

1^st number: 72/90, 2^nd number: 1 7/63

72/90 + 70/63 is 86/45.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
72/90 = 72 × 7/90 × 7 = 504/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
70/63 = 70 × 10/63 × 10 = 700/630
Add the two like fractions:
504/630 + 700/630 = 504 + 700/630 = 1204/630
1204/630 simplified gives 86/45
So, 72/90 + 70/63 = 86/45
In mixed form: 141/45

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