5(r-6)=6(r+7)-9r

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Solution for 5(r-6)=6(r+7)-9r equation:


Simplifying
5(r + -6) = 6(r + 7) + -9r

Reorder the terms:
5(-6 + r) = 6(r + 7) + -9r
(-6 * 5 + r * 5) = 6(r + 7) + -9r
(-30 + 5r) = 6(r + 7) + -9r

Reorder the terms:
-30 + 5r = 6(7 + r) + -9r
-30 + 5r = (7 * 6 + r * 6) + -9r
-30 + 5r = (42 + 6r) + -9r

Combine like terms: 6r + -9r = -3r
-30 + 5r = 42 + -3r

Solving
-30 + 5r = 42 + -3r

Solving for variable 'r'.

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

Add '3r' to each side of the equation.
-30 + 5r + 3r = 42 + -3r + 3r

Combine like terms: 5r + 3r = 8r
-30 + 8r = 42 + -3r + 3r

Combine like terms: -3r + 3r = 0
-30 + 8r = 42 + 0
-30 + 8r = 42

Add '30' to each side of the equation.
-30 + 30 + 8r = 42 + 30

Combine like terms: -30 + 30 = 0
0 + 8r = 42 + 30
8r = 42 + 30

Combine like terms: 42 + 30 = 72
8r = 72

Divide each side by '8'.
r = 9

Simplifying
r = 9

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