Answers

Add 90/40 and 8/70

1^st number: 2 10/40, 2^nd number: 8/70

90/40 + 8/70 is 331/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 70 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   90/40 = 90 × 7/40 × 7 = 630/280
3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
   8/70 = 8 × 4/70 × 4 = 32/280
4. Add the two like fractions:
   630/280 + 32/280 = 630 + 32/280 = 662/280
5. 662/280 simplified gives 331/140
6. So, 90/40 + 8/70 = 331/140
   In mixed form: 251/140

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