Add 90/40 and 84/28
1st number: 2 10/40, 2nd number: 3 0/28
90/40 + 84/28 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
90/40 = 90 × 7/40 × 7 = 630/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
84/28 = 84 × 10/28 × 10 = 840/280 - Add the two like fractions:
630/280 + 840/280 = 630 + 840/280 = 1470/280 - 1470/280 simplified gives 21/4
- So, 90/40 + 84/28 = 21/4
In mixed form: 51/4
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