13-r=7+2r

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Solution for 13-r=7+2r equation:


Simplifying
13 + -1r = 7 + 2r

Solving
13 + -1r = 7 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
13 + -1r + -2r = 7 + 2r + -2r

Combine like terms: -1r + -2r = -3r
13 + -3r = 7 + 2r + -2r

Combine like terms: 2r + -2r = 0
13 + -3r = 7 + 0
13 + -3r = 7

Add '-13' to each side of the equation.
13 + -13 + -3r = 7 + -13

Combine like terms: 13 + -13 = 0
0 + -3r = 7 + -13
-3r = 7 + -13

Combine like terms: 7 + -13 = -6
-3r = -6

Divide each side by '-3'.
r = 2

Simplifying
r = 2

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