solve by substiution method 2y+x= -15 ; x=3y
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Answer:
hope it helps you see the attachment for further information....
Given equation,
[tex]2y+x=-15\\x=3y[/tex]
Substituting, x = 3y, in the first eq, we get,
[tex]2y + x = -15\\2y+3y=-15\\5y=-15\\\\\boxed{\boxed{\bold{y=-3}}}}[/tex]
[tex]\boxed{\boxed{\bold{x = -9}}}}[/tex]