Question

Solve the system of equations using elimination method?
2y = x + 1
–2x – y = 7

Answer 1

multiply equation 1 by two and then add with the equation two u will get y then substitute y in the equation one original...:) u will get x..

Answer 2

solve it then teell me where u stuck..

Answer 3

First, bring the x and y-terms to the same side and the constant to the other side.
2y = x + 1
-x + 2y = 1

Now set up a system of linear equations.
-x + 2y = 1
-2x - y = 7

-x + 2y = 1
2(-2x - y = 7)

-x + 2y = 1
-4x - 2y = 14

The y-terms cancel.
-5x = 15
x = -3
Now, plug -3 back in for x and solve for y to get your complete solution set.

Answer 4

(-3,-2)???

Answer 5

yup..