-4x=-(2x+21)+3

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Solution for -4x=-(2x+21)+3 equation:


Simplifying
-4x = -1(2x + 21) + 3

Reorder the terms:
-4x = -1(21 + 2x) + 3
-4x = (21 * -1 + 2x * -1) + 3
-4x = (-21 + -2x) + 3

Reorder the terms:
-4x = -21 + 3 + -2x

Combine like terms: -21 + 3 = -18
-4x = -18 + -2x

Solving
-4x = -18 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-4x + 2x = -18 + -2x + 2x

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

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

Divide each side by '-2'.
x = 9

Simplifying
x = 9

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