Question

If 12x +17y =48 and 17x +12y =68 then what is the value of x-y = ? *
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Answer 1

Answer:

$\huge\rm\red{❥Answer}$

• 12x + 17y = 48-----(1)

• 17x + 12y = 68 -----(2)

Subtract equation 1 from 2

17x + 12y = 68

12x + 17y = 48

-. -. -

____________

5x - 5y = 20

Divide by 5 on both sides

5x/5 - 5y/5 = 20/5

x - y = 4

Hope it helps you

Answer 2

12x+17y=48

17x+12y=68

we can subtract

we get -5x+5y=-20

-5x+y =4

y-x =4/5