Add 90/70 and 75/20
1st number: 1 20/70, 2nd number: 3 15/20
90/70 + 75/20 is 141/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
90/70 = 90 × 2/70 × 2 = 180/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
75/20 = 75 × 7/20 × 7 = 525/140 - Add the two like fractions:
180/140 + 525/140 = 180 + 525/140 = 705/140 - 705/140 simplified gives 141/28
- So, 90/70 + 75/20 = 141/28
In mixed form: 51/28
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