Answers

Add 45/70 and 90/40

1^st number: 45/70, 2^nd number: 2 10/40

45/70 + 90/40 is 81/28.

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,
   45/70 = 45 × 4/70 × 4 = 180/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   90/40 = 90 × 7/40 × 7 = 630/280
4. Add the two like fractions:
   180/280 + 630/280 = 180 + 630/280 = 810/280
5. 810/280 simplified gives 81/28
6. So, 45/70 + 90/40 = 81/28
   In mixed form: 225/28

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