7[3-(-4x-9)]=0

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Solution for 7[3-(-4x-9)]=0 equation:


Simplifying
7[3 + -1(-4x + -9)] = 0

Reorder the terms:
7[3 + -1(-9 + -4x)] = 0
7[3 + (-9 * -1 + -4x * -1)] = 0
7[3 + (9 + 4x)] = 0

Combine like terms: 3 + 9 = 12
7[12 + 4x] = 0
[12 * 7 + 4x * 7] = 0
[84 + 28x] = 0

Solving
84 + 28x = 0

Solving for variable 'x'.

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

Add '-84' to each side of the equation.
84 + -84 + 28x = 0 + -84

Combine like terms: 84 + -84 = 0
0 + 28x = 0 + -84
28x = 0 + -84

Combine like terms: 0 + -84 = -84
28x = -84

Divide each side by '28'.
x = -3

Simplifying
x = -3

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