2r-r-r+2r+4r-5=13

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Solution for 2r-r-r+2r+4r-5=13 equation: 


Simplifying
2r + -1r + -1r + 2r + 4r + -5 = 13

Reorder the terms:
-5 + 2r + -1r + -1r + 2r + 4r = 13

Combine like terms: 2r + -1r = 1r
-5 + 1r + -1r + 2r + 4r = 13

Combine like terms: 1r + -1r = 0
-5 + 0 + 2r + 4r = 13
-5 + 2r + 4r = 13

Combine like terms: 2r + 4r = 6r
-5 + 6r = 13

Solving
-5 + 6r = 13

Solving for variable 'r'.

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

Add '5' to each side of the equation.
-5 + 5 + 6r = 13 + 5

Combine like terms: -5 + 5 = 0
0 + 6r = 13 + 5
6r = 13 + 5

Combine like terms: 13 + 5 = 18
6r = 18

Divide each side by '6'.
r = 3

Simplifying
r = 3

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