4(9-5x-4x)+5(6x+6)=12

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Solution for 4(9-5x-4x)+5(6x+6)=12 equation:


Simplifying
4(9 + -5x + -4x) + 5(6x + 6) = 12

Combine like terms: -5x + -4x = -9x
4(9 + -9x) + 5(6x + 6) = 12
(9 * 4 + -9x * 4) + 5(6x + 6) = 12
(36 + -36x) + 5(6x + 6) = 12

Reorder the terms:
36 + -36x + 5(6 + 6x) = 12
36 + -36x + (6 * 5 + 6x * 5) = 12
36 + -36x + (30 + 30x) = 12

Reorder the terms:
36 + 30 + -36x + 30x = 12

Combine like terms: 36 + 30 = 66
66 + -36x + 30x = 12

Combine like terms: -36x + 30x = -6x
66 + -6x = 12

Solving
66 + -6x = 12

Solving for variable 'x'.

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

Add '-66' to each side of the equation.
66 + -66 + -6x = 12 + -66

Combine like terms: 66 + -66 = 0
0 + -6x = 12 + -66
-6x = 12 + -66

Combine like terms: 12 + -66 = -54
-6x = -54

Divide each side by '-6'.
x = 9

Simplifying
x = 9

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