2x-5(3x-7(4x-9))=66

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Solution for 2x-5(3x-7(4x-9))=66 equation:


Simplifying
2x + -5(3x + -7(4x + -9)) = 66

Reorder the terms:
2x + -5(3x + -7(-9 + 4x)) = 66
2x + -5(3x + (-9 * -7 + 4x * -7)) = 66
2x + -5(3x + (63 + -28x)) = 66

Reorder the terms:
2x + -5(63 + 3x + -28x) = 66

Combine like terms: 3x + -28x = -25x
2x + -5(63 + -25x) = 66
2x + (63 * -5 + -25x * -5) = 66
2x + (-315 + 125x) = 66

Reorder the terms:
-315 + 2x + 125x = 66

Combine like terms: 2x + 125x = 127x
-315 + 127x = 66

Solving
-315 + 127x = 66

Solving for variable 'x'.

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

Add '315' to each side of the equation.
-315 + 315 + 127x = 66 + 315

Combine like terms: -315 + 315 = 0
0 + 127x = 66 + 315
127x = 66 + 315

Combine like terms: 66 + 315 = 381
127x = 381

Divide each side by '127'.
x = 3

Simplifying
x = 3

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