5x-(3x-3)=21

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


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

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

Reorder the terms:
3 + 5x + -3x = 21

Combine like terms: 5x + -3x = 2x
3 + 2x = 21

Solving
3 + 2x = 21

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 2x = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 2x = 21 + -3
2x = 21 + -3

Combine like terms: 21 + -3 = 18
2x = 18

Divide each side by '2'.
x = 9

Simplifying
x = 9

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