3x-5(x-3)=21

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


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

Reorder the terms:
3x + -5(-3 + x) = 21
3x + (-3 * -5 + x * -5) = 21
3x + (15 + -5x) = 21

Reorder the terms:
15 + 3x + -5x = 21

Combine like terms: 3x + -5x = -2x
15 + -2x = 21

Solving
15 + -2x = 21

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + -2x = 21 + -15

Combine like terms: 15 + -15 = 0
0 + -2x = 21 + -15
-2x = 21 + -15

Combine like terms: 21 + -15 = 6
-2x = 6

Divide each side by '-2'.
x = -3

Simplifying
x = -3

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