4x-4=6x-21

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Solution for 4x-4=6x-21 equation:


Simplifying
4x + -4 = 6x + -21

Reorder the terms:
-4 + 4x = 6x + -21

Reorder the terms:
-4 + 4x = -21 + 6x

Solving
-4 + 4x = -21 + 6x

Solving for variable 'x'.

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

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

Combine like terms: 4x + -6x = -2x
-4 + -2x = -21 + 6x + -6x

Combine like terms: 6x + -6x = 0
-4 + -2x = -21 + 0
-4 + -2x = -21

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

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

Combine like terms: -21 + 4 = -17
-2x = -17

Divide each side by '-2'.
x = 8.5

Simplifying
x = 8.5

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