Add 90/45 and 70/20
1st number: 2 0/45, 2nd number: 3 10/20
90/45 + 70/20 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
90/45 = 90 × 4/45 × 4 = 360/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Add the two like fractions:
360/180 + 630/180 = 360 + 630/180 = 990/180 - 990/180 simplified gives 11/2
- So, 90/45 + 70/20 = 11/2
In mixed form: 51/2
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