12x+9(10-x)=111

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Solution for 12x+9(10-x)=111 equation:


Simplifying
12x + 9(10 + -1x) = 111
12x + (10 * 9 + -1x * 9) = 111
12x + (90 + -9x) = 111

Reorder the terms:
90 + 12x + -9x = 111

Combine like terms: 12x + -9x = 3x
90 + 3x = 111

Solving
90 + 3x = 111

Solving for variable 'x'.

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

Add '-90' to each side of the equation.
90 + -90 + 3x = 111 + -90

Combine like terms: 90 + -90 = 0
0 + 3x = 111 + -90
3x = 111 + -90

Combine like terms: 111 + -90 = 21
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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