Add 70/90 and 20/50
70/90 + 20/50 is 53/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
70/90 = 70 × 5/90 × 5 = 350/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
20/50 = 20 × 9/50 × 9 = 180/450 - Add the two like fractions:
350/450 + 180/450 = 350 + 180/450 = 530/450 - 530/450 simplified gives 53/45
- So, 70/90 + 20/50 = 53/45
In mixed form: 18/45
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