Add 60/63 and 90/70, Solve 60/63 + 1 20/70 as a fraction

Add 60/63 and 90/70

1^st number: 60/63, 2^nd number: 1 20/70

60/63 + 90/70 is 47/21.

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,
60/63 = 60 × 10/63 × 10 = 600/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
90/70 = 90 × 9/70 × 9 = 810/630
Add the two like fractions:
600/630 + 810/630 = 600 + 810/630 = 1410/630
1410/630 simplified gives 47/21
So, 60/63 + 90/70 = 47/21
In mixed form: 25/21

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