Question

x - y = 4 x + y = 8 The x-coordinate of the solution to the system shown is _____.
2
4
6
12

Answer 1

x - y = 4

x - y = 4x + y = 8

x - y = 4x + y = 82x = 12

x - y = 4x + y = 82x = 12x = 6

x - y = 4x + y = 82x = 12x = 6x + y = 8

x - y = 4x + y = 82x = 12x = 6x + y = 8y = 8 - 6

x - y = 4x + y = 82x = 12x = 6x + y = 8y = 8 - 6y = 2

x - y = 4x + y = 82x = 12x = 6x + y = 8y = 8 - 6y = 2please mark me brainleast

Answer 2

Answer: x = 6

Explanation:

In the first equation,

x - y = 4

-y = 4 - x

y = - (4 - x)

y = -4 + x

Substituting the value of y in the second equation.

x + y = 8

x + (-4 + x) = 8

x - 4 + x = 8

2x - 4 = 8

2x = 8 + 4

2x = 12

x = 12/2

x = 6