Add 72/42 and 90/5
1st number: 1 30/42, 2nd number: 18 0/5
72/42 + 90/5 is 138/7.
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,
90/5 = 90 × 42/5 × 42 = 3780/210 - Add the two like fractions:
360/210 + 3780/210 = 360 + 3780/210 = 4140/210 - 4140/210 simplified gives 138/7
- So, 72/42 + 90/5 = 138/7
In mixed form: 195/7
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