-5-21r=7

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Solution for -5-21r=7 equation: 


Simplifying
-5 + -21r = 7

Solving
-5 + -21r = 7

Solving for variable 'r'.

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

Add '5' to each side of the equation.
-5 + 5 + -21r = 7 + 5

Combine like terms: -5 + 5 = 0
0 + -21r = 7 + 5
-21r = 7 + 5

Combine like terms: 7 + 5 = 12
-21r = 12

Divide each side by '-21'.
r = -0.5714285714

Simplifying
r = -0.5714285714

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