Add 45/42 and 90/40
1st number: 1 3/42, 2nd number: 2 10/40
45/42 + 90/40 is 93/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
45/42 = 45 × 20/42 × 20 = 900/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
90/40 = 90 × 21/40 × 21 = 1890/840 - Add the two like fractions:
900/840 + 1890/840 = 900 + 1890/840 = 2790/840 - 2790/840 simplified gives 93/28
- So, 45/42 + 90/40 = 93/28
In mixed form: 39/28
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