Add 72/90 and 45/72
72/90 + 45/72 is 57/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
72/90 = 72 × 4/90 × 4 = 288/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
45/72 = 45 × 5/72 × 5 = 225/360 - Add the two like fractions:
288/360 + 225/360 = 288 + 225/360 = 513/360 - 513/360 simplified gives 57/40
- So, 72/90 + 45/72 = 57/40
In mixed form: 117/40
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Related: 72/90+90/72