Add 60/42 and 81/90, Solve 1 18/42 + 81/90 as a fraction

Add 60/42 and 81/90

1^st number: 1 18/42, 2^nd number: 81/90

60/42 + 81/90 is 163/70.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 42 × 15 = 630,
60/42 = 60 × 15/42 × 15 = 900/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
81/90 = 81 × 7/90 × 7 = 567/630
Add the two like fractions:
900/630 + 567/630 = 900 + 567/630 = 1467/630
1467/630 simplified gives 163/70
So, 60/42 + 81/90 = 163/70
In mixed form: 223/70

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