20-2(x+2)=18

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Solution for 20-2(x+2)=18 equation:


Simplifying
20 + -2(x + 2) = 18

Reorder the terms:
20 + -2(2 + x) = 18
20 + (2 * -2 + x * -2) = 18
20 + (-4 + -2x) = 18

Combine like terms: 20 + -4 = 16
16 + -2x = 18

Solving
16 + -2x = 18

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + -2x = 18 + -16

Combine like terms: 16 + -16 = 0
0 + -2x = 18 + -16
-2x = 18 + -16

Combine like terms: 18 + -16 = 2
-2x = 2

Divide each side by '-2'.
x = -1

Simplifying
x = -1

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