Add 21/24 and 36/70
21/24 + 36/70 is 389/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 70 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 24 × 35 = 840,
21/24 = 21 × 35/24 × 35 = 735/840 - Likewise, for the 2nd fraction, since 70 × 12 = 840,
36/70 = 36 × 12/70 × 12 = 432/840 - Add the two like fractions:
735/840 + 432/840 = 735 + 432/840 = 1167/840 - 1167/840 simplified gives 389/280
- So, 21/24 + 36/70 = 389/280
In mixed form: 1109/280
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