4(r+3)=r

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Solution for 4(r+3)=r equation:


Simplifying
4(r + 3) = r

Reorder the terms:
4(3 + r) = r
(3 * 4 + r * 4) = r
(12 + 4r) = r

Solving
12 + 4r = r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
12 + 4r + -1r = r + -1r

Combine like terms: 4r + -1r = 3r
12 + 3r = r + -1r

Combine like terms: r + -1r = 0
12 + 3r = 0

Add '-12' to each side of the equation.
12 + -12 + 3r = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 3r = 0 + -12
3r = 0 + -12

Combine like terms: 0 + -12 = -12
3r = -12

Divide each side by '3'.
r = -4

Simplifying
r = -4

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