Add 84/90 and 28/80
84/90 + 28/80 is 77/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
84/90 = 84 × 8/90 × 8 = 672/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
28/80 = 28 × 9/80 × 9 = 252/720 - Add the two like fractions:
672/720 + 252/720 = 672 + 252/720 = 924/720 - 924/720 simplified gives 77/60
- So, 84/90 + 28/80 = 77/60
In mixed form: 117/60
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