Add 70/72 and 18/90
70/72 + 18/90 is 211/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
70/72 = 70 × 5/72 × 5 = 350/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
18/90 = 18 × 4/90 × 4 = 72/360 - Add the two like fractions:
350/360 + 72/360 = 350 + 72/360 = 422/360 - 422/360 simplified gives 211/180
- So, 70/72 + 18/90 = 211/180
In mixed form: 131/180
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