2x+4+8=31

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Solution for 2x+4+8=31 equation:


Simplifying
2x + 4 + 8 = 31

Reorder the terms:
4 + 8 + 2x = 31

Combine like terms: 4 + 8 = 12
12 + 2x = 31

Solving
12 + 2x = 31

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 2x = 31 + -12

Combine like terms: 12 + -12 = 0
0 + 2x = 31 + -12
2x = 31 + -12

Combine like terms: 31 + -12 = 19
2x = 19

Divide each side by '2'.
x = 9.5

Simplifying
x = 9.5

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