Add 45/30 and 21/7
1st number: 1 15/30, 2nd number: 3 0/7
45/30 + 21/7 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
45/30 = 45 × 7/30 × 7 = 315/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
21/7 = 21 × 30/7 × 30 = 630/210 - Add the two like fractions:
315/210 + 630/210 = 315 + 630/210 = 945/210 - 945/210 simplified gives 9/2
- So, 45/30 + 21/7 = 9/2
In mixed form: 41/2
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