12r+5s-7t+11r-9s-4r=

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Solution for 12r+5s-7t+11r-9s-4r= equation:


Simplifying
12r + 5s + -7t + 11r + -9s + -4r = 0

Reorder the terms:
12r + 11r + -4r + 5s + -9s + -7t = 0

Combine like terms: 12r + 11r = 23r
23r + -4r + 5s + -9s + -7t = 0

Combine like terms: 23r + -4r = 19r
19r + 5s + -9s + -7t = 0

Combine like terms: 5s + -9s = -4s
19r + -4s + -7t = 0

Solving
19r + -4s + -7t = 0

Solving for variable 'r'.

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

Add '4s' to each side of the equation.
19r + -4s + 4s + -7t = 0 + 4s

Combine like terms: -4s + 4s = 0
19r + 0 + -7t = 0 + 4s
19r + -7t = 0 + 4s
Remove the zero:
19r + -7t = 4s

Add '7t' to each side of the equation.
19r + -7t + 7t = 4s + 7t

Combine like terms: -7t + 7t = 0
19r + 0 = 4s + 7t
19r = 4s + 7t

Divide each side by '19'.
r = 0.2105263158s + 0.3684210526t

Simplifying
r = 0.2105263158s + 0.3684210526t

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