Question

solve by elimination method
x + 4y = 9
-x + 4y = -1
what is the solution of system

Answer 1

help someone please
solve by elimination method
x + 4y = 9
-x + 4y = -1
what is the solution of system

Answer 2

Call x + 4y = 9 equation 1, and -x + 4y = -1 equation 2.
You then subtract equation 2 from equation 1 so you get,
x - (-x) + 4y - 4y = 9 - (-1)
which makes 2x = 10
so :. x = 5. Substitute 5 into equation 1, so it becomes, 5 + 4y = 9
It then becomes 4y = 9 - 5 = 4
:. 4y = 4 and so y = 1, x = 5

Answer 3

so the solutio is (1, 5) correct