-4r-9=19

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Solution for -4r-9=19 equation: 


Simplifying
-4r + -9 = 19

Reorder the terms:
-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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