Answer: the answer is x= -y-9
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7
Explanation:
y=−7x−9
Swap sides so that all variable terms are on the left-hand side.
−7x−9=y
Add 9 to both sides.
−7x=y+9
Divide both sides by −7.
−7
−7x
=
−7
y+9
Dividing by −7 undoes the multiplication by −7.
x=
−7
y+9
Divide y+9 by −7.
x=
7
−y−9