Question

in order to use the elimination method for the x terms the x terms must add to equal 0 explain the steps you would take to solve the system by eliminating the x term

Answer 1

take an example of a system of equations in x and y which I have labelled ! and 2:

x + y = 7.......................(1)
2x - 3y = -1 .....................(2)

we need to eliminate x so the first step is to multiply (1) by -2:-
-2x - 2y = -14 .....................(3)
2x - 3y = -1 .....................(2)

now adding (3) and (2) will eliminate x because -2x + 2x = 0
adding we get
0 - 5y = -15

we can now find the value of y

Answer 2

y = -15/-5 = 3
to find x we plug in the value y = 3 in equation (1):-
x + 3 = 7
x = 7-3 = 4

so the solution is x=4 , y = 3

Answer 3

i dont get the second step

Answer 4

y = -15/-5 = 3?

Answer 5

or adding the 2 equations (3) and (2) ?