Add 45/90 and 21/84
45/90 + 21/84 is 3/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
45/90 = 45 × 14/90 × 14 = 630/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
21/84 = 21 × 15/84 × 15 = 315/1260 - Add the two like fractions:
630/1260 + 315/1260 = 630 + 315/1260 = 945/1260 - 945/1260 simplified gives 3/4
- So, 45/90 + 21/84 = 3/4
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