Question

x=y and x+y=7, solve by elimination.

Answer 1

Ah, elimination, ok

Answer 2

we doing elimination

Answer 3

Then, subtract y from both sides in the first equation:
x-y = 0.
Add both equations:
2x + 0y = 7
x = 7.2

Answer 4

7/2*

Answer 5

7/2+y=0, solve

Answer 6

That means that y = -7/2. But substituting back, we would get:
7/2 - y = 0 => y = 7/2

Answer 7

i need to find y

Answer 8

It's a similar process: subtract y on both sides of equation 1
x-y = 0
Multiply by -1
-x + y = 0
Add both equations:
0x + 2y = 7
y = 7/2

Answer 9

solve belimination, 2x-y=3 and 2/3x-y=-1

Answer 10

by elimination