21-4x=-(x+3)+5x

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Solution for 21-4x=-(x+3)+5x equation:


Simplifying
21 + -4x = -1(x + 3) + 5x

Reorder the terms:
21 + -4x = -1(3 + x) + 5x
21 + -4x = (3 * -1 + x * -1) + 5x
21 + -4x = (-3 + -1x) + 5x

Combine like terms: -1x + 5x = 4x
21 + -4x = -3 + 4x

Solving
21 + -4x = -3 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
21 + -4x + -4x = -3 + 4x + -4x

Combine like terms: -4x + -4x = -8x
21 + -8x = -3 + 4x + -4x

Combine like terms: 4x + -4x = 0
21 + -8x = -3 + 0
21 + -8x = -3

Add '-21' to each side of the equation.
21 + -21 + -8x = -3 + -21

Combine like terms: 21 + -21 = 0
0 + -8x = -3 + -21
-8x = -3 + -21

Combine like terms: -3 + -21 = -24
-8x = -24

Divide each side by '-8'.
x = 3

Simplifying
x = 3

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