Answers

Add 56/12 and 90/70

1^st number: 4 8/12, 2^nd number: 1 20/70

56/12 + 90/70 is 125/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 70 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 12 × 35 = 420,
   56/12 = 56 × 35/12 × 35 = 1960/420
3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
   90/70 = 90 × 6/70 × 6 = 540/420
4. Add the two like fractions:
   1960/420 + 540/420 = 1960 + 540/420 = 2500/420
5. 2500/420 simplified gives 125/21
6. So, 56/12 + 90/70 = 125/21
   In mixed form: 520/21

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