Answers

Add 42/35 and 90/30

1^st number: 1 7/35, 2^nd number: 3 0/30

42/35 + 90/30 is 21/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 35 × 6 = 210,
   42/35 = 42 × 6/35 × 6 = 252/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   90/30 = 90 × 7/30 × 7 = 630/210
4. Add the two like fractions:
   252/210 + 630/210 = 252 + 630/210 = 882/210
5. 882/210 simplified gives 21/5
6. So, 42/35 + 90/30 = 21/5
   In mixed form: 41/5

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁸⁴/₃₅+⁹⁰/₃₀ ⁴²/₇₀+⁹⁰/₃₀ ⁴²/₃₅+⁹⁰/₆₀

Add Fractions Calculator