Add 90/42 and 20/5
1st number: 2 6/42, 2nd number: 4 0/5
90/42 + 20/5 is 43/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
90/42 = 90 × 5/42 × 5 = 450/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
20/5 = 20 × 42/5 × 42 = 840/210 - Add the two like fractions:
450/210 + 840/210 = 450 + 840/210 = 1290/210 - 1290/210 simplified gives 43/7
- So, 90/42 + 20/5 = 43/7
In mixed form: 61/7
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