Add 18/80 and 42/45
18/80 + 42/45 is 139/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
18/80 = 18 × 9/80 × 9 = 162/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
42/45 = 42 × 16/45 × 16 = 672/720 - Add the two like fractions:
162/720 + 672/720 = 162 + 672/720 = 834/720 - 834/720 simplified gives 139/120
- So, 18/80 + 42/45 = 139/120
In mixed form: 119/120
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