3x+(x+3)=11

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Solution for 3x+(x+3)=11 equation:


Simplifying
3x + (x + 3) = 11

Reorder the terms:
3x + (3 + x) = 11

Remove parenthesis around (3 + x)
3x + 3 + x = 11

Reorder the terms:
3 + 3x + x = 11

Combine like terms: 3x + x = 4x
3 + 4x = 11

Solving
3 + 4x = 11

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 4x = 11 + -3

Combine like terms: 3 + -3 = 0
0 + 4x = 11 + -3
4x = 11 + -3

Combine like terms: 11 + -3 = 8
4x = 8

Divide each side by '4'.
x = 2

Simplifying
x = 2

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