Add 28/30 and 21/35
28/30 + 21/35 is 23/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
21/35 = 21 × 6/35 × 6 = 126/210 - Add the two like fractions:
196/210 + 126/210 = 196 + 126/210 = 322/210 - 322/210 simplified gives 23/15
- So, 28/30 + 21/35 = 23/15
In mixed form: 18/15
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