Add 90/70 and 12/36
1st number: 1 20/70, 2nd number: 12/36
90/70 + 12/36 is 34/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 36 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 70 × 18 = 1260,
90/70 = 90 × 18/70 × 18 = 1620/1260 - Likewise, for the 2nd fraction, since 36 × 35 = 1260,
12/36 = 12 × 35/36 × 35 = 420/1260 - Add the two like fractions:
1620/1260 + 420/1260 = 1620 + 420/1260 = 2040/1260 - 2040/1260 simplified gives 34/21
- So, 90/70 + 12/36 = 34/21
In mixed form: 113/21
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