Add 12/84 and 72/40, Solve 12/84 + 1 32/40 as a fraction

Add 12/84 and 72/40

1^st number: 12/84, 2^nd number: 1 32/40

12/84 + 72/40 is 68/35.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 84 × 10 = 840,
12/84 = 12 × 10/84 × 10 = 120/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
72/40 = 72 × 21/40 × 21 = 1512/840
Add the two like fractions:
120/840 + 1512/840 = 120 + 1512/840 = 1632/840
1632/840 simplified gives 68/35
So, 12/84 + 72/40 = 68/35
In mixed form: 133/35

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