12-3x=(1-2.5)

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Solution for 12-3x=(1-2.5) equation:


Simplifying
12 + -3x = (1 + -2.5)

Combine like terms: 1 + -2.5 = -1.5
12 + -3x = (-1.5)
12 + -3x = -1.5

Solving
12 + -3x = -1.5

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + -3x = -1.5 + -12

Combine like terms: 12 + -12 = 0
0 + -3x = -1.5 + -12
-3x = -1.5 + -12

Combine like terms: -1.5 + -12 = -13.5
-3x = -13.5

Divide each side by '-3'.
x = 4.5

Simplifying
x = 4.5

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