9r+3(9-7r)=

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Solution for 9r+3(9-7r)= equation:


Simplifying
9r + 3(9 + -7r) = 0
9r + (9 * 3 + -7r * 3) = 0
9r + (27 + -21r) = 0

Reorder the terms:
27 + 9r + -21r = 0

Combine like terms: 9r + -21r = -12r
27 + -12r = 0

Solving
27 + -12r = 0

Solving for variable 'r'.

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

Add '-27' to each side of the equation.
27 + -27 + -12r = 0 + -27

Combine like terms: 27 + -27 = 0
0 + -12r = 0 + -27
-12r = 0 + -27

Combine like terms: 0 + -27 = -27
-12r = -27

Divide each side by '-12'.
r = 2.25

Simplifying
r = 2.25

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