2r-1(5-r)=13r+2r

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Solution for 2r-1(5-r)=13r+2r equation:


Simplifying
2r + -1(5 + -1r) = 13r + 2r
2r + (5 * -1 + -1r * -1) = 13r + 2r
2r + (-5 + 1r) = 13r + 2r

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

Combine like terms: 2r + 1r = 3r
-5 + 3r = 13r + 2r

Combine like terms: 13r + 2r = 15r
-5 + 3r = 15r

Solving
-5 + 3r = 15r

Solving for variable 'r'.

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

Add '-15r' to each side of the equation.
-5 + 3r + -15r = 15r + -15r

Combine like terms: 3r + -15r = -12r
-5 + -12r = 15r + -15r

Combine like terms: 15r + -15r = 0
-5 + -12r = 0

Add '5' to each side of the equation.
-5 + 5 + -12r = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -12r = 0 + 5
-12r = 0 + 5

Combine like terms: 0 + 5 = 5
-12r = 5

Divide each side by '-12'.
r = -0.4166666667

Simplifying
r = -0.4166666667

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