-2(4-r)=10

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Solution for -2(4-r)=10 equation: 


Simplifying
-2(4 + -1r) = 10
(4 * -2 + -1r * -2) = 10
(-8 + 2r) = 10

Solving
-8 + 2r = 10

Solving for variable 'r'.

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

Add '8' to each side of the equation.
-8 + 8 + 2r = 10 + 8

Combine like terms: -8 + 8 = 0
0 + 2r = 10 + 8
2r = 10 + 8

Combine like terms: 10 + 8 = 18
2r = 18

Divide each side by '2'.
r = 9

Simplifying
r = 9

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