Add 72/42 and 90/35
1st number: 1 30/42, 2nd number: 2 20/35
72/42 + 90/35 is 30/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 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 35 × 6 = 210,
90/35 = 90 × 6/35 × 6 = 540/210 - Add the two like fractions:
360/210 + 540/210 = 360 + 540/210 = 900/210 - 900/210 simplified gives 30/7
- So, 72/42 + 90/35 = 30/7
In mixed form: 42/7
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