7-(3x+9)=4

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Solution for 7-(3x+9)=4 equation:


Simplifying
7 + -1(3x + 9) = 4

Reorder the terms:
7 + -1(9 + 3x) = 4
7 + (9 * -1 + 3x * -1) = 4
7 + (-9 + -3x) = 4

Combine like terms: 7 + -9 = -2
-2 + -3x = 4

Solving
-2 + -3x = 4

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + -3x = 4 + 2

Combine like terms: -2 + 2 = 0
0 + -3x = 4 + 2
-3x = 4 + 2

Combine like terms: 4 + 2 = 6
-3x = 6

Divide each side by '-3'.
x = -2

Simplifying
x = -2

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