Answers

Add 70/63 and 42/40

1^st number: 1 7/63, 2^nd number: 1 2/40

70/63 + 42/40 is 389/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 40 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 63 × 40 = 2520,
   70/63 = 70 × 40/63 × 40 = 2800/2520
3. Likewise, for the 2nd fraction, since 40 × 63 = 2520,
   42/40 = 42 × 63/40 × 63 = 2646/2520
4. Add the two like fractions:
   2800/2520 + 2646/2520 = 2800 + 2646/2520 = 5446/2520
5. 5446/2520 simplified gives 389/180
6. So, 70/63 + 42/40 = 389/180
   In mixed form: 229/180

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