Answers

Add 60/70 and 90/40

1^st number: 60/70, 2^nd number: 2 10/40

60/70 + 90/40 is 87/28.

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,
   60/70 = 60 × 4/70 × 4 = 240/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   90/40 = 90 × 7/40 × 7 = 630/280
4. Add the two like fractions:
   240/280 + 630/280 = 240 + 630/280 = 870/280
5. 870/280 simplified gives 87/28
6. So, 60/70 + 90/40 = 87/28
   In mixed form: 33/28

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