-6r+3+8r=12-4r+15

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Solution for -6r+3+8r=12-4r+15 equation:


Simplifying
-6r + 3 + 8r = 12 + -4r + 15

Reorder the terms:
3 + -6r + 8r = 12 + -4r + 15

Combine like terms: -6r + 8r = 2r
3 + 2r = 12 + -4r + 15

Reorder the terms:
3 + 2r = 12 + 15 + -4r

Combine like terms: 12 + 15 = 27
3 + 2r = 27 + -4r

Solving
3 + 2r = 27 + -4r

Solving for variable 'r'.

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

Add '4r' to each side of the equation.
3 + 2r + 4r = 27 + -4r + 4r

Combine like terms: 2r + 4r = 6r
3 + 6r = 27 + -4r + 4r

Combine like terms: -4r + 4r = 0
3 + 6r = 27 + 0
3 + 6r = 27

Add '-3' to each side of the equation.
3 + -3 + 6r = 27 + -3

Combine like terms: 3 + -3 = 0
0 + 6r = 27 + -3
6r = 27 + -3

Combine like terms: 27 + -3 = 24
6r = 24

Divide each side by '6'.
r = 4

Simplifying
r = 4

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