Add 15/90 and 42/80
15/90 + 42/80 is 83/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
15/90 = 15 × 8/90 × 8 = 120/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
42/80 = 42 × 9/80 × 9 = 378/720 - Add the two like fractions:
120/720 + 378/720 = 120 + 378/720 = 498/720 - 498/720 simplified gives 83/120
- So, 15/90 + 42/80 = 83/120
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