9r-9=23+r

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Solution for 9r-9=23+r equation:


Simplifying
9r + -9 = 23 + r

Reorder the terms:
-9 + 9r = 23 + r

Solving
-9 + 9r = 23 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-9 + 9r + -1r = 23 + r + -1r

Combine like terms: 9r + -1r = 8r
-9 + 8r = 23 + r + -1r

Combine like terms: r + -1r = 0
-9 + 8r = 23 + 0
-9 + 8r = 23

Add '9' to each side of the equation.
-9 + 9 + 8r = 23 + 9

Combine like terms: -9 + 9 = 0
0 + 8r = 23 + 9
8r = 23 + 9

Combine like terms: 23 + 9 = 32
8r = 32

Divide each side by '8'.
r = 4

Simplifying
r = 4

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