-21-6x=X-7(3+X)

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Solution for -21-6x=X-7(3+X) equation:


Simplifying
-21 + -6x = X + -7(3 + X)
-21 + -6x = X + (3 * -7 + X * -7)
-21 + -6x = X + (-21 + -7X)

Reorder the terms:
-21 + -6x = -21 + X + -7X

Combine like terms: X + -7X = -6X
-21 + -6x = -21 + -6X

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

Combine like terms: -21 + 21 = 0
0 + -6x = -21 + 21 + -6X
-6x = -21 + 21 + -6X

Combine like terms: -21 + 21 = 0
-6x = 0 + -6X
-6x = -6X

Solving
-6x = -6X

Solving for variable 'x'.

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

Divide each side by '-6'.
x = X

Simplifying
x = X

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