-9r+3t-s-5r+s+t-t+2s-11r=

Solution for -9r+3t-s-5r+s+t-t+2s-11r= equation:

Simplifying
-9r + 3t + -1s + -5r + s + t + -1t + 2s + -11r = 0

Reorder the terms:
-9r + -5r + -11r + -1s + s + 2s + 3t + t + -1t = 0

Combine like terms: -9r + -5r = -14r
-14r + -11r + -1s + s + 2s + 3t + t + -1t = 0

Combine like terms: -14r + -11r = -25r
-25r + -1s + s + 2s + 3t + t + -1t = 0

Combine like terms: -1s + s = 0
-25r + 0 + 2s + 3t + t + -1t = 0
-25r + 2s + 3t + t + -1t = 0

Combine like terms: 3t + t = 4t
-25r + 2s + 4t + -1t = 0

Combine like terms: 4t + -1t = 3t
-25r + 2s + 3t = 0

Solving
-25r + 2s + 3t = 0

Solving for variable 'r'.

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

Add '-2s' to each side of the equation.
-25r + 2s + -2s + 3t = 0 + -2s

Combine like terms: 2s + -2s = 0
-25r + 0 + 3t = 0 + -2s
-25r + 3t = 0 + -2s
Remove the zero:
-25r + 3t = -2s

Add '-3t' to each side of the equation.
-25r + 3t + -3t = -2s + -3t

Combine like terms: 3t + -3t = 0
-25r + 0 = -2s + -3t
-25r = -2s + -3t

Divide each side by '-25'.
r = 0.08s + 0.12t

Simplifying
r = 0.08s + 0.12t