9=-5r-4r

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


Simplifying
9 = -5r + -4r

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

Solving
9 = -9r

Solving for variable 'r'.

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

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

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

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

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

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

Divide each side by '9'.
r = -1

Simplifying
r = -1

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