3r+18=-(3-3r)+3r

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Solution for 3r+18=-(3-3r)+3r equation:


Simplifying
3r + 18 = -1(3 + -3r) + 3r

Reorder the terms:
18 + 3r = -1(3 + -3r) + 3r
18 + 3r = (3 * -1 + -3r * -1) + 3r
18 + 3r = (-3 + 3r) + 3r

Combine like terms: 3r + 3r = 6r
18 + 3r = -3 + 6r

Solving
18 + 3r = -3 + 6r

Solving for variable 'r'.

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

Add '-6r' to each side of the equation.
18 + 3r + -6r = -3 + 6r + -6r

Combine like terms: 3r + -6r = -3r
18 + -3r = -3 + 6r + -6r

Combine like terms: 6r + -6r = 0
18 + -3r = -3 + 0
18 + -3r = -3

Add '-18' to each side of the equation.
18 + -18 + -3r = -3 + -18

Combine like terms: 18 + -18 = 0
0 + -3r = -3 + -18
-3r = -3 + -18

Combine like terms: -3 + -18 = -21
-3r = -21

Divide each side by '-3'.
r = 7

Simplifying
r = 7

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