Add 70/40 and 80/7
1st number: 1 30/40, 2nd number: 11 3/7
70/40 + 80/7 is 369/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
70/40 = 70 × 7/40 × 7 = 490/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
80/7 = 80 × 40/7 × 40 = 3200/280 - Add the two like fractions:
490/280 + 3200/280 = 490 + 3200/280 = 3690/280 - 3690/280 simplified gives 369/28
- So, 70/40 + 80/7 = 369/28
In mixed form: 135/28
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