Verified Answer :

your solving for variable x
 do move all the terms containing x to the left and all other terms to the right 

so we going to add -0.5y to each side of the equation 
0.2x + 0.5y + -0.5y = 4 + -0.5y

them combine like terms 0.5y + -0.5y =0.0
0.2x +0.0 =4 + -0.5y
0.2x = 4 +-0.5y

Divide each side by 0.2
x= 20 +-2.5y

x=20+ -2.5y

roseponce70

Answer:

A. (20, 0)

Step-by-step explanation:

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