Add 42/63 and 90/27
1st number: 42/63, 2nd number: 3 9/27
42/63 + 90/27 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 63 × 3 = 189,
42/63 = 42 × 3/63 × 3 = 126/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
90/27 = 90 × 7/27 × 7 = 630/189 - Add the two like fractions:
126/189 + 630/189 = 126 + 630/189 = 756/189 - 756/189 simplified gives 4/1
- So, 42/63 + 90/27 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+90/27 42/63+90/54 42/63+90/81