2(2x-3)=21

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Solution for 2(2x-3)=21 equation: 


Simplifying
2(2x + -3) = 21

Reorder the terms:
2(-3 + 2x) = 21
(-3 * 2 + 2x * 2) = 21
(-6 + 4x) = 21

Solving
-6 + 4x = 21

Solving for variable 'x'.

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

Add '6' to each side of the equation.
-6 + 6 + 4x = 21 + 6

Combine like terms: -6 + 6 = 0
0 + 4x = 21 + 6
4x = 21 + 6

Combine like terms: 21 + 6 = 27
4x = 27

Divide each side by '4'.
x = 6.75

Simplifying
x = 6.75

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