7r-5r+4=9r+4r

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Solution for 7r-5r+4=9r+4r equation:


Simplifying
7r + -5r + 4 = 9r + 4r

Reorder the terms:
4 + 7r + -5r = 9r + 4r

Combine like terms: 7r + -5r = 2r
4 + 2r = 9r + 4r

Combine like terms: 9r + 4r = 13r
4 + 2r = 13r

Solving
4 + 2r = 13r

Solving for variable 'r'.

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

Add '-13r' to each side of the equation.
4 + 2r + -13r = 13r + -13r

Combine like terms: 2r + -13r = -11r
4 + -11r = 13r + -13r

Combine like terms: 13r + -13r = 0
4 + -11r = 0

Add '-4' to each side of the equation.
4 + -4 + -11r = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -11r = 0 + -4
-11r = 0 + -4

Combine like terms: 0 + -4 = -4
-11r = -4

Divide each side by '-11'.
r = 0.3636363636

Simplifying
r = 0.3636363636

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