Add 70/63 and 42/20
1st number: 1 7/63, 2nd number: 2 2/20
70/63 + 42/20 is 289/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
70/63 = 70 × 20/63 × 20 = 1400/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
42/20 = 42 × 63/20 × 63 = 2646/1260 - Add the two like fractions:
1400/1260 + 2646/1260 = 1400 + 2646/1260 = 4046/1260 - 4046/1260 simplified gives 289/90
- So, 70/63 + 42/20 = 289/90
In mixed form: 319/90
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