9-3r=2r-4

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Solution for 9-3r=2r-4 equation:


Simplifying
9 + -3r = 2r + -4

Reorder the terms:
9 + -3r = -4 + 2r

Solving
9 + -3r = -4 + 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 + -3r + -2r = -4 + 2r + -2r

Combine like terms: -3r + -2r = -5r
9 + -5r = -4 + 2r + -2r

Combine like terms: 2r + -2r = 0
9 + -5r = -4 + 0
9 + -5r = -4

Add '-9' to each side of the equation.
9 + -9 + -5r = -4 + -9

Combine like terms: 9 + -9 = 0
0 + -5r = -4 + -9
-5r = -4 + -9

Combine like terms: -4 + -9 = -13
-5r = -13

Divide each side by '-5'.
r = 2.6

Simplifying
r = 2.6

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