Add 90/70 and 12/40
1st number: 1 20/70, 2nd number: 12/40
90/70 + 12/40 is 111/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
90/70 = 90 × 4/70 × 4 = 360/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
12/40 = 12 × 7/40 × 7 = 84/280 - Add the two like fractions:
360/280 + 84/280 = 360 + 84/280 = 444/280 - 444/280 simplified gives 111/70
- So, 90/70 + 12/40 = 111/70
In mixed form: 141/70
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