Answers

Add 4/63 and 70/90

4/63 + 70/90 is 53/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   4/63 = 4 × 10/63 × 10 = 40/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   70/90 = 70 × 7/90 × 7 = 490/630
4. Add the two like fractions:
   40/630 + 490/630 = 40 + 490/630 = 530/630
5. 530/630 simplified gives 53/63
6. So, 4/63 + 70/90 = 53/63

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