9+2r-3=8r+18-4r

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Solution for 9+2r-3=8r+18-4r equation:


Simplifying
9 + 2r + -3 = 8r + 18 + -4r

Reorder the terms:
9 + -3 + 2r = 8r + 18 + -4r

Combine like terms: 9 + -3 = 6
6 + 2r = 8r + 18 + -4r

Reorder the terms:
6 + 2r = 18 + 8r + -4r

Combine like terms: 8r + -4r = 4r
6 + 2r = 18 + 4r

Solving
6 + 2r = 18 + 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.
6 + 2r + -4r = 18 + 4r + -4r

Combine like terms: 2r + -4r = -2r
6 + -2r = 18 + 4r + -4r

Combine like terms: 4r + -4r = 0
6 + -2r = 18 + 0
6 + -2r = 18

Add '-6' to each side of the equation.
6 + -6 + -2r = 18 + -6

Combine like terms: 6 + -6 = 0
0 + -2r = 18 + -6
-2r = 18 + -6

Combine like terms: 18 + -6 = 12
-2r = 12

Divide each side by '-2'.
r = -6

Simplifying
r = -6

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