Add 28/70 and 21/16
1st number: 28/70, 2nd number: 1 5/16
28/70 + 21/16 is 137/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 16 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
28/70 = 28 × 8/70 × 8 = 224/560 - Likewise, for the 2nd fraction, since 16 × 35 = 560,
21/16 = 21 × 35/16 × 35 = 735/560 - Add the two like fractions:
224/560 + 735/560 = 224 + 735/560 = 959/560 - 959/560 simplified gives 137/80
- So, 28/70 + 21/16 = 137/80
In mixed form: 157/80
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