-9=t+2s

Solution for -9=t+2s equation:

Simplifying
-9 = t + 2s

Reorder the terms:
-9 = 2s + t

Solving
-9 = 2s + t

Solving for variable 's'.

Move all terms containing s to the left, all other terms to the right.

Add '-2s' to each side of the equation.
-9 + -2s = 2s + -2s + t

Combine like terms: 2s + -2s = 0
-9 + -2s = 0 + t
-9 + -2s = t

Add '9' to each side of the equation.
-9 + 9 + -2s = 9 + t

Combine like terms: -9 + 9 = 0
0 + -2s = 9 + t
-2s = 9 + t

Divide each side by '-2'.
s = -4.5 + -0.5t

Simplifying
s = -4.5 + -0.5t