Add 90/35 and 70/42
1st number: 2 20/35, 2nd number: 1 28/42
90/35 + 70/42 is 89/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 35 × 6 = 210,
90/35 = 90 × 6/35 × 6 = 540/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
70/42 = 70 × 5/42 × 5 = 350/210 - Add the two like fractions:
540/210 + 350/210 = 540 + 350/210 = 890/210 - 890/210 simplified gives 89/21
- So, 90/35 + 70/42 = 89/21
In mixed form: 45/21
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