Add 16/20 and 70/90
16/20 + 70/90 is 71/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
16/20 = 16 × 9/20 × 9 = 144/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
70/90 = 70 × 2/90 × 2 = 140/180 - Add the two like fractions:
144/180 + 140/180 = 144 + 140/180 = 284/180 - 284/180 simplified gives 71/45
- So, 16/20 + 70/90 = 71/45
In mixed form: 126/45
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