33=12r-3(9-r)

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Solution for 33=12r-3(9-r) equation: 


Simplifying
33 = 12r + -3(9 + -1r)
33 = 12r + (9 * -3 + -1r * -3)
33 = 12r + (-27 + 3r)

Reorder the terms:
33 = -27 + 12r + 3r

Combine like terms: 12r + 3r = 15r
33 = -27 + 15r

Solving
33 = -27 + 15r

Solving for variable 'r'.

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

Add '-15r' to each side of the equation.
33 + -15r = -27 + 15r + -15r

Combine like terms: 15r + -15r = 0
33 + -15r = -27 + 0
33 + -15r = -27

Add '-33' to each side of the equation.
33 + -33 + -15r = -27 + -33

Combine like terms: 33 + -33 = 0
0 + -15r = -27 + -33
-15r = -27 + -33

Combine like terms: -27 + -33 = -60
-15r = -60

Divide each side by '-15'.
r = 4

Simplifying
r = 4

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