-9r+3t-8s-r+12s+t-t+5s-11r=

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Solution for -9r+3t-8s-r+12s+t-t+5s-11r= equation:


Simplifying
-9r + 3t + -8s + -1r + 12s + t + -1t + 5s + -11r = 0

Reorder the terms:
-9r + -1r + -11r + -8s + 12s + 5s + 3t + t + -1t = 0

Combine like terms: -9r + -1r = -10r
-10r + -11r + -8s + 12s + 5s + 3t + t + -1t = 0

Combine like terms: -10r + -11r = -21r
-21r + -8s + 12s + 5s + 3t + t + -1t = 0

Combine like terms: -8s + 12s = 4s
-21r + 4s + 5s + 3t + t + -1t = 0

Combine like terms: 4s + 5s = 9s
-21r + 9s + 3t + t + -1t = 0

Combine like terms: 3t + t = 4t
-21r + 9s + 4t + -1t = 0

Combine like terms: 4t + -1t = 3t
-21r + 9s + 3t = 0

Solving
-21r + 9s + 3t = 0

Solving for variable 'r'.

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

Add '-9s' to each side of the equation.
-21r + 9s + -9s + 3t = 0 + -9s

Combine like terms: 9s + -9s = 0
-21r + 0 + 3t = 0 + -9s
-21r + 3t = 0 + -9s
Remove the zero:
-21r + 3t = -9s

Add '-3t' to each side of the equation.
-21r + 3t + -3t = -9s + -3t

Combine like terms: 3t + -3t = 0
-21r + 0 = -9s + -3t
-21r = -9s + -3t

Divide each side by '-21'.
r = 0.4285714286s + 0.1428571429t

Simplifying
r = 0.4285714286s + 0.1428571429t

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