12-3(1x-5)=21

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Solution for 12-3(1x-5)=21 equation:


Simplifying
12 + -3(1x + -5) = 21

Reorder the terms:
12 + -3(-5 + 1x) = 21
12 + (-5 * -3 + 1x * -3) = 21
12 + (15 + -3x) = 21

Combine like terms: 12 + 15 = 27
27 + -3x = 21

Solving
27 + -3x = 21

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + -3x = 21 + -27

Combine like terms: 27 + -27 = 0
0 + -3x = 21 + -27
-3x = 21 + -27

Combine like terms: 21 + -27 = -6
-3x = -6

Divide each side by '-3'.
x = 2

Simplifying
x = 2

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