Solve for y
y=-\frac{t}{3}+5
Solve for t
t=15-3y
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3y=15-t
Subtract t from both sides.
\frac{3y}{3}=\frac{15-t}{3}
Divide both sides by 3.
y=\frac{15-t}{3}
Dividing by 3 undoes the multiplication by 3.
y=-\frac{t}{3}+5
Divide 15-t by 3.
t=15-3y
Subtract 3y from both sides.
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