x+x+(2x+1)=31

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Solution for x+x+(2x+1)=31 equation:


Simplifying
x + x + (2x + 1) = 31

Reorder the terms:
x + x + (1 + 2x) = 31

Remove parenthesis around (1 + 2x)
x + x + 1 + 2x = 31

Reorder the terms:
1 + x + x + 2x = 31

Combine like terms: x + x = 2x
1 + 2x + 2x = 31

Combine like terms: 2x + 2x = 4x
1 + 4x = 31

Solving
1 + 4x = 31

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + 4x = 31 + -1

Combine like terms: 1 + -1 = 0
0 + 4x = 31 + -1
4x = 31 + -1

Combine like terms: 31 + -1 = 30
4x = 30

Divide each side by '4'.
x = 7.5

Simplifying
x = 7.5

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