3(2x-7)=-3x+21-3x

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Solution for 3(2x-7)=-3x+21-3x equation:


Simplifying
3(2x + -7) = -3x + 21 + -3x

Reorder the terms:
3(-7 + 2x) = -3x + 21 + -3x
(-7 * 3 + 2x * 3) = -3x + 21 + -3x
(-21 + 6x) = -3x + 21 + -3x

Reorder the terms:
-21 + 6x = 21 + -3x + -3x

Combine like terms: -3x + -3x = -6x
-21 + 6x = 21 + -6x

Solving
-21 + 6x = 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.
-21 + 6x + 6x = 21 + -6x + 6x

Combine like terms: 6x + 6x = 12x
-21 + 12x = 21 + -6x + 6x

Combine like terms: -6x + 6x = 0
-21 + 12x = 21 + 0
-21 + 12x = 21

Add '21' to each side of the equation.
-21 + 21 + 12x = 21 + 21

Combine like terms: -21 + 21 = 0
0 + 12x = 21 + 21
12x = 21 + 21

Combine like terms: 21 + 21 = 42
12x = 42

Divide each side by '12'.
x = 3.5

Simplifying
x = 3.5

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