how do i solve this x-y=4 and 2x-2y=4 please help me :(

Question

anonymous · Answer

Solve one equation for one of the variables, plug that into the other equation to get a number value, then plug that number value back into the original equations to get the second variable.

goformit100 · Answer

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anonymous · Answer

Since -y does not contain the variable to solve for, move it to the right-hand side of the equation by adding y to both sides. 
x=y+4

anonymous · Answer

Since -2y does not contain the variable to solve for, move it to the right-hand side of the equation by adding 2y to both sides. 
2x=2y+4 

Divide each term in the equation by 2
2x/2 =2y/2 + 4/2
simplify
x=y+2