4*3-3x+0=21

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Solution for 4*3-3x+0=21 equation:


Simplifying
4 * 3 + -3x + 0 = 21

Multiply 4 * 3
12 + -3x + 0 = 21

Reorder the terms:
12 + 0 + -3x = 21

Combine like terms: 12 + 0 = 12
12 + -3x = 21

Solving
12 + -3x = 21

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 = 21 + -12

Combine like terms: 12 + -12 = 0
0 + -3x = 21 + -12
-3x = 21 + -12

Combine like terms: 21 + -12 = 9
-3x = 9

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

Simplifying
x = -3

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