Add 15/40 and 72/70, Solve 15/40 + 1 2/70 as a fraction

Add 15/40 and 72/70

1^st number: 15/40, 2^nd number: 1 2/70

15/40 + 72/70 is 393/280.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 40 × 7 = 280,
15/40 = 15 × 7/40 × 7 = 105/280
Likewise, for the 2nd fraction, since 70 × 4 = 280,
72/70 = 72 × 4/70 × 4 = 288/280
Add the two like fractions:
105/280 + 288/280 = 105 + 288/280 = 393/280
So, 15/40 + 72/70 = 393/280
In mixed form: 1113/280

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