8=16+4r

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Solution for 8=16+4r equation:


Simplifying
8 = 16 + 4r

Solving
8 = 16 + 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
8 + -4r = 16 + 4r + -4r

Combine like terms: 4r + -4r = 0
8 + -4r = 16 + 0
8 + -4r = 16

Add '-8' to each side of the equation.
8 + -8 + -4r = 16 + -8

Combine like terms: 8 + -8 = 0
0 + -4r = 16 + -8
-4r = 16 + -8

Combine like terms: 16 + -8 = 8
-4r = 8

Divide each side by '-4'.
r = -2

Simplifying
r = -2

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