-4=9(x+9)+3x

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Solution for -4=9(x+9)+3x equation:


Simplifying
-4 = 9(x + 9) + 3x

Reorder the terms:
-4 = 9(9 + x) + 3x
-4 = (9 * 9 + x * 9) + 3x
-4 = (81 + 9x) + 3x

Combine like terms: 9x + 3x = 12x
-4 = 81 + 12x

Solving
-4 = 81 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
-4 + -12x = 81 + 12x + -12x

Combine like terms: 12x + -12x = 0
-4 + -12x = 81 + 0
-4 + -12x = 81

Add '4' to each side of the equation.
-4 + 4 + -12x = 81 + 4

Combine like terms: -4 + 4 = 0
0 + -12x = 81 + 4
-12x = 81 + 4

Combine like terms: 81 + 4 = 85
-12x = 85

Divide each side by '-12'.
x = -7.083333333

Simplifying
x = -7.083333333

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