Add 20/90 and 70/75
20/90 + 70/75 is 52/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 75 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
20/90 = 20 × 5/90 × 5 = 100/450 - Likewise, for the 2nd fraction, since 75 × 6 = 450,
70/75 = 70 × 6/75 × 6 = 420/450 - Add the two like fractions:
100/450 + 420/450 = 100 + 420/450 = 520/450 - 520/450 simplified gives 52/45
- So, 20/90 + 70/75 = 52/45
In mixed form: 17/45
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