690=3(3x)-3x

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Solution for 690=3(3x)-3x equation:


Simplifying
690 = 3(3x) + -3x

Remove parenthesis around (3x)
690 = 3 * 3x + -3x

Multiply 3 * 3
690 = 9x + -3x

Combine like terms: 9x + -3x = 6x
690 = 6x

Solving
690 = 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.
690 + -6x = 6x + -6x

Combine like terms: 6x + -6x = 0
690 + -6x = 0

Add '-690' to each side of the equation.
690 + -690 + -6x = 0 + -690

Combine like terms: 690 + -690 = 0
0 + -6x = 0 + -690
-6x = 0 + -690

Combine like terms: 0 + -690 = -690
-6x = -690

Divide each side by '-6'.
x = 115

Simplifying
x = 115

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