28-4(r-5)=-4

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Solution for 28-4(r-5)=-4 equation:


Simplifying
28 + -4(r + -5) = -4

Reorder the terms:
28 + -4(-5 + r) = -4
28 + (-5 * -4 + r * -4) = -4
28 + (20 + -4r) = -4

Combine like terms: 28 + 20 = 48
48 + -4r = -4

Solving
48 + -4r = -4

Solving for variable 'r'.

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

Add '-48' to each side of the equation.
48 + -48 + -4r = -4 + -48

Combine like terms: 48 + -48 = 0
0 + -4r = -4 + -48
-4r = -4 + -48

Combine like terms: -4 + -48 = -52
-4r = -52

Divide each side by '-4'.
r = 13

Simplifying
r = 13

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