7+-3r=9r-11

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Solution for 7+-3r=9r-11 equation:


Simplifying
7 + -3r = 9r + -11

Reorder the terms:
7 + -3r = -11 + 9r

Solving
7 + -3r = -11 + 9r

Solving for variable 'r'.

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

Add '-9r' to each side of the equation.
7 + -3r + -9r = -11 + 9r + -9r

Combine like terms: -3r + -9r = -12r
7 + -12r = -11 + 9r + -9r

Combine like terms: 9r + -9r = 0
7 + -12r = -11 + 0
7 + -12r = -11

Add '-7' to each side of the equation.
7 + -7 + -12r = -11 + -7

Combine like terms: 7 + -7 = 0
0 + -12r = -11 + -7
-12r = -11 + -7

Combine like terms: -11 + -7 = -18
-12r = -18

Divide each side by '-12'.
r = 1.5

Simplifying
r = 1.5

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