x+7+x+4=31

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Solution for x+7+x+4=31 equation:


Simplifying
x + 7 + x + 4 = 31

Reorder the terms:
7 + 4 + x + x = 31

Combine like terms: 7 + 4 = 11
11 + x + x = 31

Combine like terms: x + x = 2x
11 + 2x = 31

Solving
11 + 2x = 31

Solving for variable 'x'.

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

Add '-11' to each side of the equation.
11 + -11 + 2x = 31 + -11

Combine like terms: 11 + -11 = 0
0 + 2x = 31 + -11
2x = 31 + -11

Combine like terms: 31 + -11 = 20
2x = 20

Divide each side by '2'.
x = 10

Simplifying
x = 10

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