For the following system of equations what is the x-value of the solution -x+2y=6 6y=x+18 a.-18 b.0 c.-6 d.3

Write the equations in standard form to not get confused.
-x + 2y = 6 1.
 x -  6y = -18 2.

add these equation, x will cancel out and you will be left with,
-4y = -12
y = 3
plug this value of y in either 1 or 2. lets plug it in 2,
x - 6(3) = -18
x = -18 + 18 = 0
∴x = 0

Bis the right answer

If jon had $4.00 then takes away $2.25, then he should have $1.75 left. $4.00 - $2.25 = $1.75 hope this ; )