-12=2+5r+2r

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Solution for -12=2+5r+2r equation:


Simplifying
-12 = 2 + 5r + 2r

Combine like terms: 5r + 2r = 7r
-12 = 2 + 7r

Solving
-12 = 2 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-12 + -7r = 2 + 7r + -7r

Combine like terms: 7r + -7r = 0
-12 + -7r = 2 + 0
-12 + -7r = 2

Add '12' to each side of the equation.
-12 + 12 + -7r = 2 + 12

Combine like terms: -12 + 12 = 0
0 + -7r = 2 + 12
-7r = 2 + 12

Combine like terms: 2 + 12 = 14
-7r = 14

Divide each side by '-7'.
r = -2

Simplifying
r = -2

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