System of Linear Equations?

Question

how do i do this step by step???

2x-y=4

x-2y=-1

Answer 1

Rearrange the first equation:

2x - 4 = y

Substitute the value of y into the 2nd equation:

x - 2(2x - 4) = -1

x - 4x + 8 = -1

x - 4x = -1 - 8

-3x = -9

x = -9 divided by -3 = 3

Now that you have the value of x, you can use it to solve for y.

y = 2x - 4

y = 2(3) - 4

y = 6 - 4 = 2

So your answer is (3, 2)