Add 90/30 and 4/21
1st number: 3 0/30, 2nd number: 4/21
90/30 + 4/21 is 67/21.
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,
4/21 = 4 × 10/21 × 10 = 40/210 - Add the two like fractions:
630/210 + 40/210 = 630 + 40/210 = 670/210 - 670/210 simplified gives 67/21
- So, 90/30 + 4/21 = 67/21
In mixed form: 34/21
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