Add 42/75 and 20/80
42/75 + 20/80 is 81/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 80 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 75 × 16 = 1200,
42/75 = 42 × 16/75 × 16 = 672/1200 - Likewise, for the 2nd fraction, since 80 × 15 = 1200,
20/80 = 20 × 15/80 × 15 = 300/1200 - Add the two like fractions:
672/1200 + 300/1200 = 672 + 300/1200 = 972/1200 - 972/1200 simplified gives 81/100
- So, 42/75 + 20/80 = 81/100
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