16-7r=21

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Solution for 16-7r=21 equation: 


Simplifying
16 + -7r = 21

Solving
16 + -7r = 21

Solving for variable 'r'.

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

Add '-16' to each side of the equation.
16 + -16 + -7r = 21 + -16

Combine like terms: 16 + -16 = 0
0 + -7r = 21 + -16
-7r = 21 + -16

Combine like terms: 21 + -16 = 5
-7r = 5

Divide each side by '-7'.
r = -0.7142857143

Simplifying
r = -0.7142857143

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