If ` 12 x + 17 y = 53 and 17 x + 12 y = 63 ` then find the values of ` (x + y )`

If 5x-2y = 17 and 3x +y =8 , then find the values of x and y .

If x=3 and y=4 , find the value of (15x) /(12y)

Solve 15x - 8y = 29 and 17x + 12y = 75.

If 4x+5y=10,5x+4y=17 then find the value of x+y and x-y .

Choose the correct alternative answer for each of the following question If 12x+17y = 48 and 17x+12y = 68 ,then what is the value of x-y ?