9r-3+6r=57

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Solution for 9r-3+6r=57 equation:


Simplifying
9r + -3 + 6r = 57

Reorder the terms:
-3 + 9r + 6r = 57

Combine like terms: 9r + 6r = 15r
-3 + 15r = 57

Solving
-3 + 15r = 57

Solving for variable 'r'.

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

Add '3' to each side of the equation.
-3 + 3 + 15r = 57 + 3

Combine like terms: -3 + 3 = 0
0 + 15r = 57 + 3
15r = 57 + 3

Combine like terms: 57 + 3 = 60
15r = 60

Divide each side by '15'.
r = 4

Simplifying
r = 4

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