Add 75/84 and 90/70
1st number: 75/84, 2nd number: 1 20/70
75/84 + 90/70 is 61/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
75/84 = 75 × 5/84 × 5 = 375/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
90/70 = 90 × 6/70 × 6 = 540/420 - Add the two like fractions:
375/420 + 540/420 = 375 + 540/420 = 915/420 - 915/420 simplified gives 61/28
- So, 75/84 + 90/70 = 61/28
In mixed form: 25/28
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