Add 72/42 and 63/10, Solve 1 30/42 + 6 3/10 as a fraction

Add 72/42 and 63/10

1^st number: 1 30/42, 2^nd number: 6 3/10

72/42 + 63/10 is 561/70.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
72/42 = 72 × 5/42 × 5 = 360/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
63/10 = 63 × 21/10 × 21 = 1323/210
Add the two like fractions:
360/210 + 1323/210 = 360 + 1323/210 = 1683/210
1683/210 simplified gives 561/70
So, 72/42 + 63/10 = 561/70
In mixed form: 81/70

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