8r-2(r-2)=28

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Solution for 8r-2(r-2)=28 equation:


Simplifying
8r + -2(r + -2) = 28

Reorder the terms:
8r + -2(-2 + r) = 28
8r + (-2 * -2 + r * -2) = 28
8r + (4 + -2r) = 28

Reorder the terms:
4 + 8r + -2r = 28

Combine like terms: 8r + -2r = 6r
4 + 6r = 28

Solving
4 + 6r = 28

Solving for variable 'r'.

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

Add '-4' to each side of the equation.
4 + -4 + 6r = 28 + -4

Combine like terms: 4 + -4 = 0
0 + 6r = 28 + -4
6r = 28 + -4

Combine like terms: 28 + -4 = 24
6r = 24

Divide each side by '6'.
r = 4

Simplifying
r = 4

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