40=-4x+2(3x+9)

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Solution for 40=-4x+2(3x+9) equation:


Simplifying
40 = -4x + 2(3x + 9)

Reorder the terms:
40 = -4x + 2(9 + 3x)
40 = -4x + (9 * 2 + 3x * 2)
40 = -4x + (18 + 6x)

Reorder the terms:
40 = 18 + -4x + 6x

Combine like terms: -4x + 6x = 2x
40 = 18 + 2x

Solving
40 = 18 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
40 + -2x = 18 + 2x + -2x

Combine like terms: 2x + -2x = 0
40 + -2x = 18 + 0
40 + -2x = 18

Add '-40' to each side of the equation.
40 + -40 + -2x = 18 + -40

Combine like terms: 40 + -40 = 0
0 + -2x = 18 + -40
-2x = 18 + -40

Combine like terms: 18 + -40 = -22
-2x = -22

Divide each side by '-2'.
x = 11

Simplifying
x = 11

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