-(3-r)=-7-3+2r

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Solution for -(3-r)=-7-3+2r equation:


Simplifying
-1(3 + -1r) = -7 + -3 + 2r
(3 * -1 + -1r * -1) = -7 + -3 + 2r
(-3 + 1r) = -7 + -3 + 2r

Combine like terms: -7 + -3 = -10
-3 + 1r = -10 + 2r

Solving
-3 + 1r = -10 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
-3 + 1r + -2r = -10 + 2r + -2r

Combine like terms: 1r + -2r = -1r
-3 + -1r = -10 + 2r + -2r

Combine like terms: 2r + -2r = 0
-3 + -1r = -10 + 0
-3 + -1r = -10

Add '3' to each side of the equation.
-3 + 3 + -1r = -10 + 3

Combine like terms: -3 + 3 = 0
0 + -1r = -10 + 3
-1r = -10 + 3

Combine like terms: -10 + 3 = -7
-1r = -7

Divide each side by '-1'.
r = 7

Simplifying
r = 7

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