8-4r=-2-1

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Solution for 8-4r=-2-1 equation: 


Simplifying
8 + -4r = -2 + -1

Combine like terms: -2 + -1 = -3
8 + -4r = -3

Solving
8 + -4r = -3

Solving for variable 'r'.

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

Add '-8' to each side of the equation.
8 + -8 + -4r = -3 + -8

Combine like terms: 8 + -8 = 0
0 + -4r = -3 + -8
-4r = -3 + -8

Combine like terms: -3 + -8 = -11
-4r = -11

Divide each side by '-4'.
r = 2.75

Simplifying
r = 2.75

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