-(3+r)=-4

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Solution for -(3+r)=-4 equation: 


Simplifying
-1(3 + r) = -4
(3 * -1 + r * -1) = -4
(-3 + -1r) = -4

Solving
-3 + -1r = -4

Solving for variable 'r'.

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

Add '3' to each side of the equation.
-3 + 3 + -1r = -4 + 3

Combine like terms: -3 + 3 = 0
0 + -1r = -4 + 3
-1r = -4 + 3

Combine like terms: -4 + 3 = -1
-1r = -1

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

Simplifying
r = 1

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