4r-5k+5k-2r+12-3=

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Solution for 4r-5k+5k-2r+12-3= equation:


Simplifying
4r + -5k + 5k + -2r + 12 + -3 = 0

Reorder the terms:
12 + -3 + -5k + 5k + 4r + -2r = 0

Combine like terms: 12 + -3 = 9
9 + -5k + 5k + 4r + -2r = 0

Combine like terms: -5k + 5k = 0
9 + 0 + 4r + -2r = 0
9 + 4r + -2r = 0

Combine like terms: 4r + -2r = 2r
9 + 2r = 0

Solving
9 + 2r = 0

Solving for variable 'r'.

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

Add '-9' to each side of the equation.
9 + -9 + 2r = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 2r = 0 + -9
2r = 0 + -9

Combine like terms: 0 + -9 = -9
2r = -9

Divide each side by '2'.
r = -4.5

Simplifying
r = -4.5

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