Add 45/5 and 90/42
1st number: 9 0/5, 2nd number: 2 6/42
45/5 + 90/42 is 78/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
45/5 = 45 × 42/5 × 42 = 1890/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
90/42 = 90 × 5/42 × 5 = 450/210 - Add the two like fractions:
1890/210 + 450/210 = 1890 + 450/210 = 2340/210 - 2340/210 simplified gives 78/7
- So, 45/5 + 90/42 = 78/7
In mixed form: 111/7
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