Add 72/70 and 98/40
1st number: 1 2/70, 2nd number: 2 18/40
72/70 + 98/40 is 487/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
72/70 = 72 × 4/70 × 4 = 288/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
98/40 = 98 × 7/40 × 7 = 686/280 - Add the two like fractions:
288/280 + 686/280 = 288 + 686/280 = 974/280 - 974/280 simplified gives 487/140
- So, 72/70 + 98/40 = 487/140
In mixed form: 367/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70+98/80