3+(4+r)=7

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Solution for 3+(4+r)=7 equation: 


Simplifying
3 + (4 + r) = 7

Remove parenthesis around (4 + r)
3 + 4 + r = 7

Combine like terms: 3 + 4 = 7
7 + r = 7

Add '-7' to each side of the equation.
7 + -7 + r = 7 + -7

Combine like terms: 7 + -7 = 0
0 + r = 7 + -7
r = 7 + -7

Combine like terms: 7 + -7 = 0
r = 0

Solving
r = 0

Solving for variable 'r'.

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

Simplifying
r = 0

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