Answers

Add 80/70 and 98/40

1^st number: 1 10/70, 2^nd number: 2 18/40

80/70 + 98/40 is 503/140.

Steps for adding fractions

1. 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
2. For the 1st fraction, since 70 × 4 = 280,
   80/70 = 80 × 4/70 × 4 = 320/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   98/40 = 98 × 7/40 × 7 = 686/280
4. Add the two like fractions:
   320/280 + 686/280 = 320 + 686/280 = 1006/280
5. 1006/280 simplified gives 503/140
6. So, 80/70 + 98/40 = 503/140
   In mixed form: 383/140

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