7r-12=-18-3r

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Solution for 7r-12=-18-3r equation:


Simplifying
7r + -12 = -18 + -3r

Reorder the terms:
-12 + 7r = -18 + -3r

Solving
-12 + 7r = -18 + -3r

Solving for variable 'r'.

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

Add '3r' to each side of the equation.
-12 + 7r + 3r = -18 + -3r + 3r

Combine like terms: 7r + 3r = 10r
-12 + 10r = -18 + -3r + 3r

Combine like terms: -3r + 3r = 0
-12 + 10r = -18 + 0
-12 + 10r = -18

Add '12' to each side of the equation.
-12 + 12 + 10r = -18 + 12

Combine like terms: -12 + 12 = 0
0 + 10r = -18 + 12
10r = -18 + 12

Combine like terms: -18 + 12 = -6
10r = -6

Divide each side by '10'.
r = -0.6

Simplifying
r = -0.6

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