3x-4+2(2x-2)=20

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Solution for 3x-4+2(2x-2)=20 equation:


Simplifying
3x + -4 + 2(2x + -2) = 20

Reorder the terms:
3x + -4 + 2(-2 + 2x) = 20
3x + -4 + (-2 * 2 + 2x * 2) = 20
3x + -4 + (-4 + 4x) = 20

Reorder the terms:
-4 + -4 + 3x + 4x = 20

Combine like terms: -4 + -4 = -8
-8 + 3x + 4x = 20

Combine like terms: 3x + 4x = 7x
-8 + 7x = 20

Solving
-8 + 7x = 20

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 7x = 20 + 8

Combine like terms: -8 + 8 = 0
0 + 7x = 20 + 8
7x = 20 + 8

Combine like terms: 20 + 8 = 28
7x = 28

Divide each side by '7'.
x = 4

Simplifying
x = 4

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