7-9r+5r-8=

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Solution for 7-9r+5r-8= equation:


Simplifying
7 + -9r + 5r + -8 = 0

Reorder the terms:
7 + -8 + -9r + 5r = 0

Combine like terms: 7 + -8 = -1
-1 + -9r + 5r = 0

Combine like terms: -9r + 5r = -4r
-1 + -4r = 0

Solving
-1 + -4r = 0

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + -4r = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -4r = 0 + 1
-4r = 0 + 1

Combine like terms: 0 + 1 = 1
-4r = 1

Divide each side by '-4'.
r = -0.25

Simplifying
r = -0.25

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