Answers

Add 90/70 and 42/30

1^st number: 1 20/70, 2^nd number: 1 12/30

90/70 + 42/30 is 94/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   90/70 = 90 × 3/70 × 3 = 270/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   42/30 = 42 × 7/30 × 7 = 294/210
4. Add the two like fractions:
   270/210 + 294/210 = 270 + 294/210 = 564/210
5. 564/210 simplified gives 94/35
6. So, 90/70 + 42/30 = 94/35
   In mixed form: 224/35

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