9r-12=5r+4

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Solution for 9r-12=5r+4 equation:


Simplifying
9r + -12 = 5r + 4

Reorder the terms:
-12 + 9r = 5r + 4

Reorder the terms:
-12 + 9r = 4 + 5r

Solving
-12 + 9r = 4 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
-12 + 9r + -5r = 4 + 5r + -5r

Combine like terms: 9r + -5r = 4r
-12 + 4r = 4 + 5r + -5r

Combine like terms: 5r + -5r = 0
-12 + 4r = 4 + 0
-12 + 4r = 4

Add '12' to each side of the equation.
-12 + 12 + 4r = 4 + 12

Combine like terms: -12 + 12 = 0
0 + 4r = 4 + 12
4r = 4 + 12

Combine like terms: 4 + 12 = 16
4r = 16

Divide each side by '4'.
r = 4

Simplifying
r = 4

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