Add 90/72 and 90/84
1st number: 1 18/72, 2nd number: 1 6/84
90/72 + 90/84 is 65/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 84 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504 - Likewise, for the 2nd fraction, since 84 × 6 = 504,
90/84 = 90 × 6/84 × 6 = 540/504 - Add the two like fractions:
630/504 + 540/504 = 630 + 540/504 = 1170/504 - 1170/504 simplified gives 65/28
- So, 90/72 + 90/84 = 65/28
In mixed form: 29/28
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