-2r-7=-4+4r-8r

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Solution for -2r-7=-4+4r-8r equation:


Simplifying
-2r + -7 = -4 + 4r + -8r

Reorder the terms:
-7 + -2r = -4 + 4r + -8r

Combine like terms: 4r + -8r = -4r
-7 + -2r = -4 + -4r

Solving
-7 + -2r = -4 + -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.
-7 + -2r + 4r = -4 + -4r + 4r

Combine like terms: -2r + 4r = 2r
-7 + 2r = -4 + -4r + 4r

Combine like terms: -4r + 4r = 0
-7 + 2r = -4 + 0
-7 + 2r = -4

Add '7' to each side of the equation.
-7 + 7 + 2r = -4 + 7

Combine like terms: -7 + 7 = 0
0 + 2r = -4 + 7
2r = -4 + 7

Combine like terms: -4 + 7 = 3
2r = 3

Divide each side by '2'.
r = 1.5

Simplifying
r = 1.5

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