-3r-4r-12=7

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Solution for -3r-4r-12=7 equation:


Simplifying
-3r + -4r + -12 = 7

Reorder the terms:
-12 + -3r + -4r = 7

Combine like terms: -3r + -4r = -7r
-12 + -7r = 7

Solving
-12 + -7r = 7

Solving for variable 'r'.

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

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

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

Combine like terms: 7 + 12 = 19
-7r = 19

Divide each side by '-7'.
r = -2.714285714

Simplifying
r = -2.714285714

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