Question

4x-4y=10
3x+2y=5
my options:
(2,-1/2)
(1,1)
(3,-2)

Answer 1

Multiply the second equation by 2, then add both equations together:

4x - 4y = 10
6x + 4y = 10

10x = 20

Answer 2

Finish solving from there

Answer 3

x=2

Answer 4

(2,1/2)?

Answer 5

*(2,-1/2)

Answer 6

Yeah, and substitute x = 2 back into the original equation to find y.

Answer 7

I got it(: thanks!

Answer 8

Let
4x - 4y = 10........(i)
3x + 2y = 5.........(ii)

equation (i) divide by '2' and Add (i) and (ii)

2x - 2y = 5
3x + 2y = 5
-----------
5x = 10
x = 10/5 = 2

Substituting the value of x in (ii)
3 * 2 + 2y = 5
2y = 5 - 6
y = - 1/2

Therefore, x = 2 and y = - 1/2