Add 40/12 and 30/70
1st number: 3 4/12, 2nd number: 30/70
40/12 + 30/70 is 79/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
40/12 = 40 × 35/12 × 35 = 1400/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
30/70 = 30 × 6/70 × 6 = 180/420 - Add the two like fractions:
1400/420 + 180/420 = 1400 + 180/420 = 1580/420 - 1580/420 simplified gives 79/21
- So, 40/12 + 30/70 = 79/21
In mixed form: 316/21
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