3x+(9x-1)=4x+71

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Solution for 3x+(9x-1)=4x+71 equation:


Simplifying
3x + (9x + -1) = 4x + 71

Reorder the terms:
3x + (-1 + 9x) = 4x + 71

Remove parenthesis around (-1 + 9x)
3x + -1 + 9x = 4x + 71

Reorder the terms:
-1 + 3x + 9x = 4x + 71

Combine like terms: 3x + 9x = 12x
-1 + 12x = 4x + 71

Reorder the terms:
-1 + 12x = 71 + 4x

Solving
-1 + 12x = 71 + 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.
-1 + 12x + -4x = 71 + 4x + -4x

Combine like terms: 12x + -4x = 8x
-1 + 8x = 71 + 4x + -4x

Combine like terms: 4x + -4x = 0
-1 + 8x = 71 + 0
-1 + 8x = 71

Add '1' to each side of the equation.
-1 + 1 + 8x = 71 + 1

Combine like terms: -1 + 1 = 0
0 + 8x = 71 + 1
8x = 71 + 1

Combine like terms: 71 + 1 = 72
8x = 72

Divide each side by '8'.
x = 9

Simplifying
x = 9

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