21*12=36*12-x

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Solution for 21*12=36*12-x equation:


Simplifying
21 * 12 = 36 * 12 + -1x

Multiply 21 * 12
252 = 36 * 12 + -1x

Multiply 36 * 12
252 = 432 + -1x

Solving
252 = 432 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
252 + x = 432 + -1x + x

Combine like terms: -1x + x = 0
252 + x = 432 + 0
252 + x = 432

Add '-252' to each side of the equation.
252 + -252 + x = 432 + -252

Combine like terms: 252 + -252 = 0
0 + x = 432 + -252
x = 432 + -252

Combine like terms: 432 + -252 = 180
x = 180

Simplifying
x = 180

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