3(x-15)=9(x-15)

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Solution for 3(x-15)=9(x-15) equation:


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

Reorder the terms:
3(-15 + x) = 9(x + -15)
(-15 * 3 + x * 3) = 9(x + -15)
(-45 + 3x) = 9(x + -15)

Reorder the terms:
-45 + 3x = 9(-15 + x)
-45 + 3x = (-15 * 9 + x * 9)
-45 + 3x = (-135 + 9x)

Solving
-45 + 3x = -135 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-45 + 3x + -9x = -135 + 9x + -9x

Combine like terms: 3x + -9x = -6x
-45 + -6x = -135 + 9x + -9x

Combine like terms: 9x + -9x = 0
-45 + -6x = -135 + 0
-45 + -6x = -135

Add '45' to each side of the equation.
-45 + 45 + -6x = -135 + 45

Combine like terms: -45 + 45 = 0
0 + -6x = -135 + 45
-6x = -135 + 45

Combine like terms: -135 + 45 = -90
-6x = -90

Divide each side by '-6'.
x = 15

Simplifying
x = 15

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