Add 90/70 and 60/21
1st number: 1 20/70, 2nd number: 2 18/21
90/70 + 60/21 is 29/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 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 21 × 10 = 210,
60/21 = 60 × 10/21 × 10 = 600/210 - Add the two like fractions:
270/210 + 600/210 = 270 + 600/210 = 870/210 - 870/210 simplified gives 29/7
- So, 90/70 + 60/21 = 29/7
In mixed form: 41/7
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