x=2y
y=2x+3
??
x=2y
y=2x+3,
y=2(2y)+3
y=4y+3
Solve that and then replace it to solve for x. You can post your answer if you want it checked or need more help.
y=2x+3
??
y=2x+3,
y=2(2y)+3
y=4y+3
Solve that and then replace it to solve for x. You can post your answer if you want it checked or need more help.