Answers

Add 36/84 and 7/90

36/84 + 7/90 is 319/630.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 90 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   36/84 = 36 × 15/84 × 15 = 540/1260
3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
   7/90 = 7 × 14/90 × 14 = 98/1260
4. Add the two like fractions:
   540/1260 + 98/1260 = 540 + 98/1260 = 638/1260
5. 638/1260 simplified gives 319/630
6. So, 36/84 + 7/90 = 319/630

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