Add 70/90 and 12/40
70/90 + 12/40 is 97/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
70/90 = 70 × 4/90 × 4 = 280/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
12/40 = 12 × 9/40 × 9 = 108/360 - Add the two like fractions:
280/360 + 108/360 = 280 + 108/360 = 388/360 - 388/360 simplified gives 97/90
- So, 70/90 + 12/40 = 97/90
In mixed form: 17/90
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