3=2r-9

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Solution for 3=2r-9 equation:


Simplifying
3 = 2r + -9

Reorder the terms:
3 = -9 + 2r

Solving
3 = -9 + 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.
3 + -2r = -9 + 2r + -2r

Combine like terms: 2r + -2r = 0
3 + -2r = -9 + 0
3 + -2r = -9

Add '-3' to each side of the equation.
3 + -3 + -2r = -9 + -3

Combine like terms: 3 + -3 = 0
0 + -2r = -9 + -3
-2r = -9 + -3

Combine like terms: -9 + -3 = -12
-2r = -12

Divide each side by '-2'.
r = 6

Simplifying
r = 6

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