-4(3r-7)=31

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Solution for -4(3r-7)=31 equation: 


Simplifying
-4(3r + -7) = 31

Reorder the terms:
-4(-7 + 3r) = 31
(-7 * -4 + 3r * -4) = 31
(28 + -12r) = 31

Solving
28 + -12r = 31

Solving for variable 'r'.

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

Add '-28' to each side of the equation.
28 + -28 + -12r = 31 + -28

Combine like terms: 28 + -28 = 0
0 + -12r = 31 + -28
-12r = 31 + -28

Combine like terms: 31 + -28 = 3
-12r = 3

Divide each side by '-12'.
r = -0.25

Simplifying
r = -0.25

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