16+8r-4r+4=2

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Solution for 16+8r-4r+4=2 equation:


Simplifying
16 + 8r + -4r + 4 = 2

Reorder the terms:
16 + 4 + 8r + -4r = 2

Combine like terms: 16 + 4 = 20
20 + 8r + -4r = 2

Combine like terms: 8r + -4r = 4r
20 + 4r = 2

Solving
20 + 4r = 2

Solving for variable 'r'.

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

Add '-20' to each side of the equation.
20 + -20 + 4r = 2 + -20

Combine like terms: 20 + -20 = 0
0 + 4r = 2 + -20
4r = 2 + -20

Combine like terms: 2 + -20 = -18
4r = -18

Divide each side by '4'.
r = -4.5

Simplifying
r = -4.5

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