Add 40/8 and 70/21
1st number: 5 0/8, 2nd number: 3 7/21
40/8 + 70/21 is 25/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
40/8 = 40 × 21/8 × 21 = 840/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
70/21 = 70 × 8/21 × 8 = 560/168 - Add the two like fractions:
840/168 + 560/168 = 840 + 560/168 = 1400/168 - 1400/168 simplified gives 25/3
- So, 40/8 + 70/21 = 25/3
In mixed form: 81/3
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