-7x=12-1(4x-9)

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Solution for -7x=12-1(4x-9) equation:


Simplifying
-7x = 12 + -1(4x + -9)

Reorder the terms:
-7x = 12 + -1(-9 + 4x)
-7x = 12 + (-9 * -1 + 4x * -1)
-7x = 12 + (9 + -4x)

Combine like terms: 12 + 9 = 21
-7x = 21 + -4x

Solving
-7x = 21 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
-7x + 4x = 21 + -4x + 4x

Combine like terms: -7x + 4x = -3x
-3x = 21 + -4x + 4x

Combine like terms: -4x + 4x = 0
-3x = 21 + 0
-3x = 21

Divide each side by '-3'.
x = -7

Simplifying
x = -7

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