8+2r=3r+15

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Solution for 8+2r=3r+15 equation:


Simplifying
8 + 2r = 3r + 15

Reorder the terms:
8 + 2r = 15 + 3r

Solving
8 + 2r = 15 + 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
8 + 2r + -3r = 15 + 3r + -3r

Combine like terms: 2r + -3r = -1r
8 + -1r = 15 + 3r + -3r

Combine like terms: 3r + -3r = 0
8 + -1r = 15 + 0
8 + -1r = 15

Add '-8' to each side of the equation.
8 + -8 + -1r = 15 + -8

Combine like terms: 8 + -8 = 0
0 + -1r = 15 + -8
-1r = 15 + -8

Combine like terms: 15 + -8 = 7
-1r = 7

Divide each side by '-1'.
r = -7

Simplifying
r = -7

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