Add 80/72 and 42/90
1st number: 1 8/72, 2nd number: 42/90
80/72 + 42/90 is 71/45.
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,
80/72 = 80 × 5/72 × 5 = 400/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
42/90 = 42 × 4/90 × 4 = 168/360 - Add the two like fractions:
400/360 + 168/360 = 400 + 168/360 = 568/360 - 568/360 simplified gives 71/45
- So, 80/72 + 42/90 = 71/45
In mixed form: 126/45
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