-2X-(2X+5)=21

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Solution for -2X-(2X+5)=21 equation:


Simplifying
-2X + -1(2X + 5) = 21

Reorder the terms:
-2X + -1(5 + 2X) = 21
-2X + (5 * -1 + 2X * -1) = 21
-2X + (-5 + -2X) = 21

Reorder the terms:
-5 + -2X + -2X = 21

Combine like terms: -2X + -2X = -4X
-5 + -4X = 21

Solving
-5 + -4X = 21

Solving for variable 'X'.

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

Add '5' to each side of the equation.
-5 + 5 + -4X = 21 + 5

Combine like terms: -5 + 5 = 0
0 + -4X = 21 + 5
-4X = 21 + 5

Combine like terms: 21 + 5 = 26
-4X = 26

Divide each side by '-4'.
X = -6.5

Simplifying
X = -6.5

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