Add 70/12 and 42/80
1st number: 5 10/12, 2nd number: 42/80
70/12 + 42/80 is 763/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
70/12 = 70 × 20/12 × 20 = 1400/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
42/80 = 42 × 3/80 × 3 = 126/240 - Add the two like fractions:
1400/240 + 126/240 = 1400 + 126/240 = 1526/240 - 1526/240 simplified gives 763/120
- So, 70/12 + 42/80 = 763/120
In mixed form: 643/120
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