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3x+8z=-5y
Subtract 5y from both sides. Anything subtracted from zero gives its negation.
3x=-5y-8z
Subtract 8z from both sides.
\frac{3x}{3}=\frac{-5y-8z}{3}
Divide both sides by 3.
x=\frac{-5y-8z}{3}
Dividing by 3 undoes the multiplication by 3.
5y+8z=-3x
Subtract 3x from both sides. Anything subtracted from zero gives its negation.
5y=-3x-8z
Subtract 8z from both sides.
\frac{5y}{5}=\frac{-3x-8z}{5}
Divide both sides by 5.
y=\frac{-3x-8z}{5}
Dividing by 5 undoes the multiplication by 5.