3(x-1)-1=15

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Solution for 3(x-1)-1=15 equation:


Simplifying
3(x + -1) + -1 = 15

Reorder the terms:
3(-1 + x) + -1 = 15
(-1 * 3 + x * 3) + -1 = 15
(-3 + 3x) + -1 = 15

Reorder the terms:
-3 + -1 + 3x = 15

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

Solving
-4 + 3x = 15

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + 3x = 15 + 4

Combine like terms: -4 + 4 = 0
0 + 3x = 15 + 4
3x = 15 + 4

Combine like terms: 15 + 4 = 19
3x = 19

Divide each side by '3'.
x = 6.333333333

Simplifying
x = 6.333333333

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