4(x-9)=x-15

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Solution for 4(x-9)=x-15 equation:


Simplifying
4(x + -9) = x + -15

Reorder the terms:
4(-9 + x) = x + -15
(-9 * 4 + x * 4) = x + -15
(-36 + 4x) = x + -15

Reorder the terms:
-36 + 4x = -15 + x

Solving
-36 + 4x = -15 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-36 + 4x + -1x = -15 + x + -1x

Combine like terms: 4x + -1x = 3x
-36 + 3x = -15 + x + -1x

Combine like terms: x + -1x = 0
-36 + 3x = -15 + 0
-36 + 3x = -15

Add '36' to each side of the equation.
-36 + 36 + 3x = -15 + 36

Combine like terms: -36 + 36 = 0
0 + 3x = -15 + 36
3x = -15 + 36

Combine like terms: -15 + 36 = 21
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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