Add 70/5 and 90/42
1st number: 14 0/5, 2nd number: 2 6/42
70/5 + 90/42 is 113/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
70/5 = 70 × 42/5 × 42 = 2940/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
90/42 = 90 × 5/42 × 5 = 450/210 - Add the two like fractions:
2940/210 + 450/210 = 2940 + 450/210 = 3390/210 - 3390/210 simplified gives 113/7
- So, 70/5 + 90/42 = 113/7
In mixed form: 161/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/10+90/42 70/5+90/84 70/15+90/42 70/25+90/42 70/35+90/42