Add 72/42 and 15/5
1st number: 1 30/42, 2nd number: 3 0/5
72/42 + 15/5 is 33/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 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 5 × 42 = 210,
15/5 = 15 × 42/5 × 42 = 630/210 - Add the two like fractions:
360/210 + 630/210 = 360 + 630/210 = 990/210 - 990/210 simplified gives 33/7
- So, 72/42 + 15/5 = 33/7
In mixed form: 45/7
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