Add 90/63 and 75/70, Solve 1 27/63 + 1 5/70 as a fraction

Add 90/63 and 75/70

1^st number: 1 27/63, 2^nd number: 1 5/70

90/63 + 75/70 is 5/2.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 63 × 10 = 630,
90/63 = 90 × 10/63 × 10 = 900/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
75/70 = 75 × 9/70 × 9 = 675/630
Add the two like fractions:
900/630 + 675/630 = 900 + 675/630 = 1575/630
1575/630 simplified gives 5/2
So, 90/63 + 75/70 = 5/2
In mixed form: 21/2

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