-2(1r+7)=-31

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Solution for -2(1r+7)=-31 equation:


Simplifying
-2(1r + 7) = -31

Reorder the terms:
-2(7 + 1r) = -31
(7 * -2 + 1r * -2) = -31
(-14 + -2r) = -31

Solving
-14 + -2r = -31

Solving for variable 'r'.

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

Add '14' to each side of the equation.
-14 + 14 + -2r = -31 + 14

Combine like terms: -14 + 14 = 0
0 + -2r = -31 + 14
-2r = -31 + 14

Combine like terms: -31 + 14 = -17
-2r = -17

Divide each side by '-2'.
r = 8.5

Simplifying
r = 8.5

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