Add 90/30 and 42/21
1st number: 3 0/30, 2nd number: 2 0/21
90/30 + 42/21 is 5/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
90/30 = 90 × 7/30 × 7 = 630/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
42/21 = 42 × 10/21 × 10 = 420/210 - Add the two like fractions:
630/210 + 420/210 = 630 + 420/210 = 1050/210 - 1050/210 simplified gives 5/1
- So, 90/30 + 42/21 = 5/1
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