-6(8r+9)+9(9r-8)=

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Solution for -6(8r+9)+9(9r-8)= equation:


Simplifying
-6(8r + 9) + 9(9r + -8) = 0

Reorder the terms:
-6(9 + 8r) + 9(9r + -8) = 0
(9 * -6 + 8r * -6) + 9(9r + -8) = 0
(-54 + -48r) + 9(9r + -8) = 0

Reorder the terms:
-54 + -48r + 9(-8 + 9r) = 0
-54 + -48r + (-8 * 9 + 9r * 9) = 0
-54 + -48r + (-72 + 81r) = 0

Reorder the terms:
-54 + -72 + -48r + 81r = 0

Combine like terms: -54 + -72 = -126
-126 + -48r + 81r = 0

Combine like terms: -48r + 81r = 33r
-126 + 33r = 0

Solving
-126 + 33r = 0

Solving for variable 'r'.

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

Add '126' to each side of the equation.
-126 + 126 + 33r = 0 + 126

Combine like terms: -126 + 126 = 0
0 + 33r = 0 + 126
33r = 0 + 126

Combine like terms: 0 + 126 = 126
33r = 126

Divide each side by '33'.
r = 3.818181818

Simplifying
r = 3.818181818

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