(-5r)-(-14r)=(-9)

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Solution for (-5r)-(-14r)=(-9) equation: 


Simplifying
(-5r) + -1(-14r) = (-9)

Remove parenthesis around (-14r)
(-5r) + -1 * -14r = (-9)

Multiply -1 * -14
(-5r) + 14r = (-9)

Combine like terms: (-5r) + 14r = 9r
9r = (-9)
9r = -9

Solving
9r = -9

Solving for variable 'r'.

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

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

Simplifying
r = -1

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