-(7x-4x)=9

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


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

Combine like terms: 7x + -4x = 3x
-1(3x) = 9

Remove parenthesis around (3x)
-1 * 3x = 9

Multiply -1 * 3
-3x = 9

Solving
-3x = 9

Solving for variable 'x'.

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

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

Simplifying
x = -3

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