Add 9/84 and 7/40
9/84 + 7/40 is 79/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
9/84 = 9 × 10/84 × 10 = 90/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
7/40 = 7 × 21/40 × 21 = 147/840 - Add the two like fractions:
90/840 + 147/840 = 90 + 147/840 = 237/840 - 237/840 simplified gives 79/280
- So, 9/84 + 7/40 = 79/280
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