r-4=3r-16-r

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Solution for r-4=3r-16-r equation:


Simplifying
r + -4 = 3r + -16 + -1r

Reorder the terms:
-4 + r = 3r + -16 + -1r

Reorder the terms:
-4 + r = -16 + 3r + -1r

Combine like terms: 3r + -1r = 2r
-4 + r = -16 + 2r

Solving
-4 + r = -16 + 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.
-4 + r + -2r = -16 + 2r + -2r

Combine like terms: r + -2r = -1r
-4 + -1r = -16 + 2r + -2r

Combine like terms: 2r + -2r = 0
-4 + -1r = -16 + 0
-4 + -1r = -16

Add '4' to each side of the equation.
-4 + 4 + -1r = -16 + 4

Combine like terms: -4 + 4 = 0
0 + -1r = -16 + 4
-1r = -16 + 4

Combine like terms: -16 + 4 = -12
-1r = -12

Divide each side by '-1'.
r = 12

Simplifying
r = 12

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