15r+6s-11t+r-9s+t-2s+5r-2t-r=

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Solution for 15r+6s-11t+r-9s+t-2s+5r-2t-r= equation:


Simplifying
15r + 6s + -11t + r + -9s + t + -2s + 5r + -2t + -1r = 0

Reorder the terms:
15r + r + 5r + -1r + 6s + -9s + -2s + -11t + t + -2t = 0

Combine like terms: 15r + r = 16r
16r + 5r + -1r + 6s + -9s + -2s + -11t + t + -2t = 0

Combine like terms: 16r + 5r = 21r
21r + -1r + 6s + -9s + -2s + -11t + t + -2t = 0

Combine like terms: 21r + -1r = 20r
20r + 6s + -9s + -2s + -11t + t + -2t = 0

Combine like terms: 6s + -9s = -3s
20r + -3s + -2s + -11t + t + -2t = 0

Combine like terms: -3s + -2s = -5s
20r + -5s + -11t + t + -2t = 0

Combine like terms: -11t + t = -10t
20r + -5s + -10t + -2t = 0

Combine like terms: -10t + -2t = -12t
20r + -5s + -12t = 0

Solving
20r + -5s + -12t = 0

Solving for variable 'r'.

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

Add '5s' to each side of the equation.
20r + -5s + 5s + -12t = 0 + 5s

Combine like terms: -5s + 5s = 0
20r + 0 + -12t = 0 + 5s
20r + -12t = 0 + 5s
Remove the zero:
20r + -12t = 5s

Add '12t' to each side of the equation.
20r + -12t + 12t = 5s + 12t

Combine like terms: -12t + 12t = 0
20r + 0 = 5s + 12t
20r = 5s + 12t

Divide each side by '20'.
r = 0.25s + 0.6t

Simplifying
r = 0.25s + 0.6t

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