3x-5(x-5)=21

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


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

Reorder the terms:
3x + -5(-5 + x) = 21
3x + (-5 * -5 + x * -5) = 21
3x + (25 + -5x) = 21

Reorder the terms:
25 + 3x + -5x = 21

Combine like terms: 3x + -5x = -2x
25 + -2x = 21

Solving
25 + -2x = 21

Solving for variable 'x'.

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

Add '-25' to each side of the equation.
25 + -25 + -2x = 21 + -25

Combine like terms: 25 + -25 = 0
0 + -2x = 21 + -25
-2x = 21 + -25

Combine like terms: 21 + -25 = -4
-2x = -4

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

Simplifying
x = 2

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