8r+9=2r-3

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Solution for 8r+9=2r-3 equation:


Simplifying
8r + 9 = 2r + -3

Reorder the terms:
9 + 8r = 2r + -3

Reorder the terms:
9 + 8r = -3 + 2r

Solving
9 + 8r = -3 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
9 + 8r + -2r = -3 + 2r + -2r

Combine like terms: 8r + -2r = 6r
9 + 6r = -3 + 2r + -2r

Combine like terms: 2r + -2r = 0
9 + 6r = -3 + 0
9 + 6r = -3

Add '-9' to each side of the equation.
9 + -9 + 6r = -3 + -9

Combine like terms: 9 + -9 = 0
0 + 6r = -3 + -9
6r = -3 + -9

Combine like terms: -3 + -9 = -12
6r = -12

Divide each side by '6'.
r = -2

Simplifying
r = -2

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