8r+5=-4+9r

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Solution for 8r+5=-4+9r equation:


Simplifying
8r + 5 = -4 + 9r

Reorder the terms:
5 + 8r = -4 + 9r

Solving
5 + 8r = -4 + 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.
5 + 8r + -9r = -4 + 9r + -9r

Combine like terms: 8r + -9r = -1r
5 + -1r = -4 + 9r + -9r

Combine like terms: 9r + -9r = 0
5 + -1r = -4 + 0
5 + -1r = -4

Add '-5' to each side of the equation.
5 + -5 + -1r = -4 + -5

Combine like terms: 5 + -5 = 0
0 + -1r = -4 + -5
-1r = -4 + -5

Combine like terms: -4 + -5 = -9
-1r = -9

Divide each side by '-1'.
r = 9

Simplifying
r = 9

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