3r+-16r+9r=4

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Solution for 3r+-16r+9r=4 equation: 


Simplifying
3r + -16r + 9r = 4

Combine like terms: 3r + -16r = -13r
-13r + 9r = 4

Combine like terms: -13r + 9r = -4r
-4r = 4

Solving
-4r = 4

Solving for variable 'r'.

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

Divide each side by '-4'.
r = -1

Simplifying
r = -1

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