2(2x+1)-2(X-4)=21

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Solution for 2(2x+1)-2(X-4)=21 equation: 


Simplifying
2(2x + 1) + -2(X + -4) = 21

Reorder the terms:
2(1 + 2x) + -2(X + -4) = 21
(1 * 2 + 2x * 2) + -2(X + -4) = 21
(2 + 4x) + -2(X + -4) = 21

Reorder the terms:
2 + 4x + -2(-4 + X) = 21
2 + 4x + (-4 * -2 + X * -2) = 21
2 + 4x + (8 + -2X) = 21

Reorder the terms:
2 + 8 + -2X + 4x = 21

Combine like terms: 2 + 8 = 10
10 + -2X + 4x = 21

Solving
10 + -2X + 4x = 21

Solving for variable 'X'.

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

Add '-10' to each side of the equation.
10 + -2X + -10 + 4x = 21 + -10

Reorder the terms:
10 + -10 + -2X + 4x = 21 + -10

Combine like terms: 10 + -10 = 0
0 + -2X + 4x = 21 + -10
-2X + 4x = 21 + -10

Combine like terms: 21 + -10 = 11
-2X + 4x = 11

Add '-4x' to each side of the equation.
-2X + 4x + -4x = 11 + -4x

Combine like terms: 4x + -4x = 0
-2X + 0 = 11 + -4x
-2X = 11 + -4x

Divide each side by '-2'.
X = -5.5 + 2x

Simplifying
X = -5.5 + 2x

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