x-15=3(x+5)

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Solution for x-15=3(x+5) equation:


Simplifying
x + -15 = 3(x + 5)

Reorder the terms:
-15 + x = 3(x + 5)

Reorder the terms:
-15 + x = 3(5 + x)
-15 + x = (5 * 3 + x * 3)
-15 + x = (15 + 3x)

Solving
-15 + x = 15 + 3x

Solving for variable 'x'.

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

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

Combine like terms: x + -3x = -2x
-15 + -2x = 15 + 3x + -3x

Combine like terms: 3x + -3x = 0
-15 + -2x = 15 + 0
-15 + -2x = 15

Add '15' to each side of the equation.
-15 + 15 + -2x = 15 + 15

Combine like terms: -15 + 15 = 0
0 + -2x = 15 + 15
-2x = 15 + 15

Combine like terms: 15 + 15 = 30
-2x = 30

Divide each side by '-2'.
x = -15

Simplifying
x = -15

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