Add 90/70 and 75/12
1st number: 1 20/70, 2nd number: 6 3/12
90/70 + 75/12 is 211/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
90/70 = 90 × 6/70 × 6 = 540/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
75/12 = 75 × 35/12 × 35 = 2625/420 - Add the two like fractions:
540/420 + 2625/420 = 540 + 2625/420 = 3165/420 - 3165/420 simplified gives 211/28
- So, 90/70 + 75/12 = 211/28
In mixed form: 715/28
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