Add 42/48 and 80/90
42/48 + 80/90 is 127/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
42/48 = 42 × 15/48 × 15 = 630/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
80/90 = 80 × 8/90 × 8 = 640/720 - Add the two like fractions:
630/720 + 640/720 = 630 + 640/720 = 1270/720 - 1270/720 simplified gives 127/72
- So, 42/48 + 80/90 = 127/72
In mixed form: 155/72
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