Add 42/45 and 20/35
42/45 + 20/35 is 158/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 35 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
42/45 = 42 × 7/45 × 7 = 294/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
20/35 = 20 × 9/35 × 9 = 180/315 - Add the two like fractions:
294/315 + 180/315 = 294 + 180/315 = 474/315 - 474/315 simplified gives 158/105
- So, 42/45 + 20/35 = 158/105
In mixed form: 153/105
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