Add 90/70 and 40/30
1st number: 1 20/70, 2nd number: 1 10/30
90/70 + 40/30 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
40/30 = 40 × 7/30 × 7 = 280/210 - Add the two like fractions:
270/210 + 280/210 = 270 + 280/210 = 550/210 - 550/210 simplified gives 55/21
- So, 90/70 + 40/30 = 55/21
In mixed form: 213/21
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