3(2r-5)=8r-9

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Solution for 3(2r-5)=8r-9 equation:


Simplifying
3(2r + -5) = 8r + -9

Reorder the terms:
3(-5 + 2r) = 8r + -9
(-5 * 3 + 2r * 3) = 8r + -9
(-15 + 6r) = 8r + -9

Reorder the terms:
-15 + 6r = -9 + 8r

Solving
-15 + 6r = -9 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
-15 + 6r + -8r = -9 + 8r + -8r

Combine like terms: 6r + -8r = -2r
-15 + -2r = -9 + 8r + -8r

Combine like terms: 8r + -8r = 0
-15 + -2r = -9 + 0
-15 + -2r = -9

Add '15' to each side of the equation.
-15 + 15 + -2r = -9 + 15

Combine like terms: -15 + 15 = 0
0 + -2r = -9 + 15
-2r = -9 + 15

Combine like terms: -9 + 15 = 6
-2r = 6

Divide each side by '-2'.
r = -3

Simplifying
r = -3

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