3r-12=2r+5

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Solution for 3r-12=2r+5 equation:


Simplifying
3r + -12 = 2r + 5

Reorder the terms:
-12 + 3r = 2r + 5

Reorder the terms:
-12 + 3r = 5 + 2r

Solving
-12 + 3r = 5 + 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.
-12 + 3r + -2r = 5 + 2r + -2r

Combine like terms: 3r + -2r = 1r
-12 + 1r = 5 + 2r + -2r

Combine like terms: 2r + -2r = 0
-12 + 1r = 5 + 0
-12 + 1r = 5

Add '12' to each side of the equation.
-12 + 12 + 1r = 5 + 12

Combine like terms: -12 + 12 = 0
0 + 1r = 5 + 12
1r = 5 + 12

Combine like terms: 5 + 12 = 17
1r = 17

Divide each side by '1'.
r = 17

Simplifying
r = 17

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