25-13=4(x-9)

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Solution for 25-13=4(x-9) equation:


Simplifying
25 + -13 = 4(x + -9)

Combine like terms: 25 + -13 = 12
12 = 4(x + -9)

Reorder the terms:
12 = 4(-9 + x)
12 = (-9 * 4 + x * 4)
12 = (-36 + 4x)

Solving
12 = -36 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
12 + -4x = -36 + 4x + -4x

Combine like terms: 4x + -4x = 0
12 + -4x = -36 + 0
12 + -4x = -36

Add '-12' to each side of the equation.
12 + -12 + -4x = -36 + -12

Combine like terms: 12 + -12 = 0
0 + -4x = -36 + -12
-4x = -36 + -12

Combine like terms: -36 + -12 = -48
-4x = -48

Divide each side by '-4'.
x = 12

Simplifying
x = 12

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