-1+r=2r-4

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Solution for -1+r=2r-4 equation:


Simplifying
-1 + r = 2r + -4

Reorder the terms:
-1 + r = -4 + 2r

Solving
-1 + r = -4 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
-1 + r + -2r = -4 + 2r + -2r

Combine like terms: r + -2r = -1r
-1 + -1r = -4 + 2r + -2r

Combine like terms: 2r + -2r = 0
-1 + -1r = -4 + 0
-1 + -1r = -4

Add '1' to each side of the equation.
-1 + 1 + -1r = -4 + 1

Combine like terms: -1 + 1 = 0
0 + -1r = -4 + 1
-1r = -4 + 1

Combine like terms: -4 + 1 = -3
-1r = -3

Divide each side by '-1'.
r = 3

Simplifying
r = 3

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