Add 42/90 and 84/63, Solve 42/90 + 1 21/63 as a fraction

Add 42/90 and 84/63

1^st number: 42/90, 2^nd number: 1 21/63

42/90 + 84/63 is 9/5.

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,
42/90 = 42 × 7/90 × 7 = 294/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
84/63 = 84 × 10/63 × 10 = 840/630
Add the two like fractions:
294/630 + 840/630 = 294 + 840/630 = 1134/630
1134/630 simplified gives 9/5
So, 42/90 + 84/63 = 9/5
In mixed form: 14/5

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