Answers

Add 70/40 and 12/90

1^st number: 1 30/40, 2^nd number: 12/90

70/40 + 12/90 is 113/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 90 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   70/40 = 70 × 9/40 × 9 = 630/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   12/90 = 12 × 4/90 × 4 = 48/360
4. Add the two like fractions:
   630/360 + 48/360 = 630 + 48/360 = 678/360
5. 678/360 simplified gives 113/60
6. So, 70/40 + 12/90 = 113/60
   In mixed form: 153/60

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