2r-7r+r-9=

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Solution for 2r-7r+r-9= equation:


Simplifying
2r + -7r + r + -9 = 0

Reorder the terms:
-9 + 2r + -7r + r = 0

Combine like terms: 2r + -7r = -5r
-9 + -5r + r = 0

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

Solving
-9 + -4r = 0

Solving for variable 'r'.

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

Add '9' to each side of the equation.
-9 + 9 + -4r = 0 + 9

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

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

Divide each side by '-4'.
r = -2.25

Simplifying
r = -2.25

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