Add 40/2 and 90/21
1st number: 20 0/2, 2nd number: 4 6/21
40/2 + 90/21 is 170/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
40/2 = 40 × 21/2 × 21 = 840/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
90/21 = 90 × 2/21 × 2 = 180/42 - Add the two like fractions:
840/42 + 180/42 = 840 + 180/42 = 1020/42 - 1020/42 simplified gives 170/7
- So, 40/2 + 90/21 = 170/7
In mixed form: 242/7
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