13x-(3x-9)=39

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Solution for 13x-(3x-9)=39 equation:


Simplifying
13x + -1(3x + -9) = 39

Reorder the terms:
13x + -1(-9 + 3x) = 39
13x + (-9 * -1 + 3x * -1) = 39
13x + (9 + -3x) = 39

Reorder the terms:
9 + 13x + -3x = 39

Combine like terms: 13x + -3x = 10x
9 + 10x = 39

Solving
9 + 10x = 39

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 10x = 39 + -9

Combine like terms: 9 + -9 = 0
0 + 10x = 39 + -9
10x = 39 + -9

Combine like terms: 39 + -9 = 30
10x = 30

Divide each side by '10'.
x = 3

Simplifying
x = 3

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