Add 70/75 and 42/90
70/75 + 42/90 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
70/75 = 70 × 6/75 × 6 = 420/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
42/90 = 42 × 5/90 × 5 = 210/450 - Add the two like fractions:
420/450 + 210/450 = 420 + 210/450 = 630/450 - 630/450 simplified gives 7/5
- So, 70/75 + 42/90 = 7/5
In mixed form: 12/5
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