Add 42/80 and 25/84
42/80 + 25/84 is 691/840.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 84 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
42/80 = 42 × 21/80 × 21 = 882/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
25/84 = 25 × 20/84 × 20 = 500/1680 - Add the two like fractions:
882/1680 + 500/1680 = 882 + 500/1680 = 1382/1680 - 1382/1680 simplified gives 691/840
- So, 42/80 + 25/84 = 691/840
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