3x+4(2-x)+9=18

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Solution for 3x+4(2-x)+9=18 equation:


Simplifying
3x + 4(2 + -1x) + 9 = 18
3x + (2 * 4 + -1x * 4) + 9 = 18
3x + (8 + -4x) + 9 = 18

Reorder the terms:
8 + 9 + 3x + -4x = 18

Combine like terms: 8 + 9 = 17
17 + 3x + -4x = 18

Combine like terms: 3x + -4x = -1x
17 + -1x = 18

Solving
17 + -1x = 18

Solving for variable 'x'.

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

Add '-17' to each side of the equation.
17 + -17 + -1x = 18 + -17

Combine like terms: 17 + -17 = 0
0 + -1x = 18 + -17
-1x = 18 + -17

Combine like terms: 18 + -17 = 1
-1x = 1

Divide each side by '-1'.
x = -1

Simplifying
x = -1

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