Answers

Add 49/70 and 63/90

49/70 + 63/90 is 7/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 70 × 9 = 630,
   49/70 = 49 × 9/70 × 9 = 441/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   63/90 = 63 × 7/90 × 7 = 441/630
4. Add the two like fractions:
   441/630 + 441/630 = 441 + 441/630 = 882/630
5. 882/630 simplified gives 7/5
6. So, 49/70 + 63/90 = 7/5
   In mixed form: 12/5

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