3000+12x=21

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Solution for 3000+12x=21 equation: 


Simplifying
3000 + 12x = 21

Solving
3000 + 12x = 21

Solving for variable 'x'.

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

Add '-3000' to each side of the equation.
3000 + -3000 + 12x = 21 + -3000

Combine like terms: 3000 + -3000 = 0
0 + 12x = 21 + -3000
12x = 21 + -3000

Combine like terms: 21 + -3000 = -2979
12x = -2979

Divide each side by '12'.
x = -248.25

Simplifying
x = -248.25

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