7-7+2r+18=

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Solution for 7-7+2r+18= equation:


Simplifying
7 + -7 + 2r + 18 = 0

Reorder the terms:
7 + -7 + 18 + 2r = 0

Combine like terms: 7 + -7 = 0
0 + 18 + 2r = 0
18 + 2r = 0

Solving
18 + 2r = 0

Solving for variable 'r'.

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

Add '-18' to each side of the equation.
18 + -18 + 2r = 0 + -18

Combine like terms: 18 + -18 = 0
0 + 2r = 0 + -18
2r = 0 + -18

Combine like terms: 0 + -18 = -18
2r = -18

Divide each side by '2'.
r = -9

Simplifying
r = -9

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