Question

Solve. Check. Explain.
2x-5=y
x-7=-y

Addition/Elimination Method.
(I'm a visual learner)

Answer 1

Add both the equations.
Can u plz tell me vat u get @anonymous551?

Answer 2

3x - 12y = 0

Answer 3

U r partly right. Plz check -12y

Answer 4

3x - 12 = 0y ..?

or

3x +12 = 0y

Answer 5

hmm it is
3x-12=0
2x-5=y-(1)
x-7=-y-(2)
(1)+(2)=>2x-5+x-7=y-y
3x-12=0
Nw using 3x-12=0
Can u find x @anonymous551?

Answer 6

3x-12=0
+12 +12

3x = 12
---------
x = 4

Answer 7

ya perfect:)
Now plug in that value of x in 2x-5=y to find y. Can u do it?

Answer 8

2(4) - 5 = y
8 - 5 = y
3 = y

Answer 9

ya perfect:)

Answer 10

NO. Sorry.

2x -5 = 3

Answer 11

because 3 = Y

Answer 12

x=4 and y=3
is correct.
Nw plug in these values in
x-7=-y and check if Right hand side = left hand side

Answer 13

Wait. One second..

Answer 14

Oh.. Okay.

2x - 5 = y
2(4) - 5 = 3
8 - 5 = 3
True.

x-7=-y
(4) - 7 = -(3)
-3 =-3
true.

Answer 15

I though the equation was 2x - 12 for some reason.. Thanks for going through this w/ me.

Answer 16

:)

Answer 17

But you need to improve you explanation. If I didn't already know how to do this, I would have been so confused.

Answer 18

Welcome:) oh sorry. anyways thanx for the feedback:)