Solve for t
t=\frac{y-19}{3}
Solve for y
y=3t+19
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y=10+3t+9
Use the distributive property to multiply 3 by t+3.
y=19+3t
Add 10 and 9 to get 19.
19+3t=y
Swap sides so that all variable terms are on the left hand side.
3t=y-19
Subtract 19 from both sides.
\frac{3t}{3}=\frac{y-19}{3}
Divide both sides by 3.
t=\frac{y-19}{3}
Dividing by 3 undoes the multiplication by 3.
y=10+3t+9
Use the distributive property to multiply 3 by t+3.
y=19+3t
Add 10 and 9 to get 19.
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