Add 40/21 and 18/72, Solve 1 19/21 + 18/72 as a fraction

Add 40/21 and 18/72

1^st number: 1 19/21, 2^nd number: 18/72

40/21 + 18/72 is 181/84.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 21 × 24 = 504,
40/21 = 40 × 24/21 × 24 = 960/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
18/72 = 18 × 7/72 × 7 = 126/504
Add the two like fractions:
960/504 + 126/504 = 960 + 126/504 = 1086/504
1086/504 simplified gives 181/84
So, 40/21 + 18/72 = 181/84
In mixed form: 213/84

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