Add 70/84 and 84/90
70/84 + 84/90 is 53/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
70/84 = 70 × 15/84 × 15 = 1050/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
84/90 = 84 × 14/90 × 14 = 1176/1260 - Add the two like fractions:
1050/1260 + 1176/1260 = 1050 + 1176/1260 = 2226/1260 - 2226/1260 simplified gives 53/30
- So, 70/84 + 84/90 = 53/30
In mixed form: 123/30
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