Add 90/45 and 70/40
1st number: 2 0/45, 2nd number: 1 30/40
90/45 + 70/40 is 15/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
90/45 = 90 × 8/45 × 8 = 720/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
70/40 = 70 × 9/40 × 9 = 630/360 - Add the two like fractions:
720/360 + 630/360 = 720 + 630/360 = 1350/360 - 1350/360 simplified gives 15/4
- So, 90/45 + 70/40 = 15/4
In mixed form: 33/4
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