15-3(x-1)+4=12

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Solution for 15-3(x-1)+4=12 equation: 


Simplifying
15 + -3(x + -1) + 4 = 12

Reorder the terms:
15 + -3(-1 + x) + 4 = 12
15 + (-1 * -3 + x * -3) + 4 = 12
15 + (3 + -3x) + 4 = 12

Reorder the terms:
15 + 3 + 4 + -3x = 12

Combine like terms: 15 + 3 = 18
18 + 4 + -3x = 12

Combine like terms: 18 + 4 = 22
22 + -3x = 12

Solving
22 + -3x = 12

Solving for variable 'x'.

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

Add '-22' to each side of the equation.
22 + -22 + -3x = 12 + -22

Combine like terms: 22 + -22 = 0
0 + -3x = 12 + -22
-3x = 12 + -22

Combine like terms: 12 + -22 = -10
-3x = -10

Divide each side by '-3'.
x = 3.333333333

Simplifying
x = 3.333333333

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