9-4r=-19

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Solution for 9-4r=-19 equation: 


Simplifying
9 + -4r = -19

Solving
9 + -4r = -19

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 = -19 + -9

Combine like terms: 9 + -9 = 0
0 + -4r = -19 + -9
-4r = -19 + -9

Combine like terms: -19 + -9 = -28
-4r = -28

Divide each side by '-4'.
r = 7

Simplifying
r = 7

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