(3x+4)=0.5*(31-x-9)

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Solution for (3x+4)=0.5*(31-x-9) equation:


Simplifying
(3x + 4) = 0.5(31 + -1x + -9)

Reorder the terms:
(4 + 3x) = 0.5(31 + -1x + -9)

Remove parenthesis around (4 + 3x)
4 + 3x = 0.5(31 + -1x + -9)

Reorder the terms:
4 + 3x = 0.5(31 + -9 + -1x)

Combine like terms: 31 + -9 = 22
4 + 3x = 0.5(22 + -1x)
4 + 3x = (22 * 0.5 + -1x * 0.5)
4 + 3x = (11 + -0.5x)

Solving
4 + 3x = 11 + -0.5x

Solving for variable 'x'.

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

Add '0.5x' to each side of the equation.
4 + 3x + 0.5x = 11 + -0.5x + 0.5x

Combine like terms: 3x + 0.5x = 3.5x
4 + 3.5x = 11 + -0.5x + 0.5x

Combine like terms: -0.5x + 0.5x = 0.0
4 + 3.5x = 11 + 0.0
4 + 3.5x = 11

Add '-4' to each side of the equation.
4 + -4 + 3.5x = 11 + -4

Combine like terms: 4 + -4 = 0
0 + 3.5x = 11 + -4
3.5x = 11 + -4

Combine like terms: 11 + -4 = 7
3.5x = 7

Divide each side by '3.5'.
x = 2

Simplifying
x = 2

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