2r-28=-40+4r

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Solution for 2r-28=-40+4r equation:


Simplifying
2r + -28 = -40 + 4r

Reorder the terms:
-28 + 2r = -40 + 4r

Solving
-28 + 2r = -40 + 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.
-28 + 2r + -4r = -40 + 4r + -4r

Combine like terms: 2r + -4r = -2r
-28 + -2r = -40 + 4r + -4r

Combine like terms: 4r + -4r = 0
-28 + -2r = -40 + 0
-28 + -2r = -40

Add '28' to each side of the equation.
-28 + 28 + -2r = -40 + 28

Combine like terms: -28 + 28 = 0
0 + -2r = -40 + 28
-2r = -40 + 28

Combine like terms: -40 + 28 = -12
-2r = -12

Divide each side by '-2'.
r = 6

Simplifying
r = 6

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