Divide the product of 312 and 415 by the product of 212 and 523 .
Divide the sum of 215and 512by the product of 314and 813.
1- What should be added to
(1/2+1/3+1/5) to get 2
2-Find [3/11*5/6]-[9/12*4/3] +[5/13*6/15]
3- Divide the sum of 65/12 and 8/3 by their difference.
4- If a= 3 and b= 5 find the value of [ a/5+b/a]a-2
Divide the sum of 35 and −12 by the product of −17 and −1.