Add 16/40 and 70/42
1st number: 16/40, 2nd number: 1 28/42
16/40 + 70/42 is 31/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
16/40 = 16 × 21/40 × 21 = 336/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
70/42 = 70 × 20/42 × 20 = 1400/840 - Add the two like fractions:
336/840 + 1400/840 = 336 + 1400/840 = 1736/840 - 1736/840 simplified gives 31/15
- So, 16/40 + 70/42 = 31/15
In mixed form: 21/15
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