Add 90/30 and 42/40
1st number: 3 0/30, 2nd number: 1 2/40
90/30 + 42/40 is 81/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
90/30 = 90 × 4/30 × 4 = 360/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120 - Add the two like fractions:
360/120 + 126/120 = 360 + 126/120 = 486/120 - 486/120 simplified gives 81/20
- So, 90/30 + 42/40 = 81/20
In mixed form: 41/20
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