Add 42/90 and 7/8
42/90 + 7/8 is 161/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
42/90 = 42 × 4/90 × 4 = 168/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
7/8 = 7 × 45/8 × 45 = 315/360 - Add the two like fractions:
168/360 + 315/360 = 168 + 315/360 = 483/360 - 483/360 simplified gives 161/120
- So, 42/90 + 7/8 = 161/120
In mixed form: 141/120
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