-4r+3r=21

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Solution for -4r+3r=21 equation: 


Simplifying
-4r + 3r = 21

Combine like terms: -4r + 3r = -1r
-1r = 21

Solving
-1r = 21

Solving for variable 'r'.

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

Divide each side by '-1'.
r = -21

Simplifying
r = -21

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