(3+r)-4=0

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Solution for (3+r)-4=0 equation: 


Simplifying
(3 + r) + -4 = 0

Remove parenthesis around (3 + r)
3 + r + -4 = 0

Reorder the terms:
3 + -4 + r = 0

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

Solving
-1 + r = 0

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + r = 0 + 1

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

Combine like terms: 0 + 1 = 1
r = 1

Simplifying
r = 1

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