Add 9/42 and 90/72, Solve 9/42 + 1 18/72 as a fraction

Add 9/42 and 90/72

1^st number: 9/42, 2^nd number: 1 18/72

9/42 + 90/72 is 41/28.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 42 × 12 = 504,
9/42 = 9 × 12/42 × 12 = 108/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504
Add the two like fractions:
108/504 + 630/504 = 108 + 630/504 = 738/504
738/504 simplified gives 41/28
So, 9/42 + 90/72 = 41/28
In mixed form: 113/28

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