Add 20/90 and 42/72
20/90 + 42/72 is 29/36.
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,
20/90 = 20 × 4/90 × 4 = 80/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
42/72 = 42 × 5/72 × 5 = 210/360 - Add the two like fractions:
80/360 + 210/360 = 80 + 210/360 = 290/360 - 290/360 simplified gives 29/36
- So, 20/90 + 42/72 = 29/36
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