9=3x-7x+1

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Solution for 9=3x-7x+1 equation:


Simplifying
9 = 3x + -7x + 1

Reorder the terms:
9 = 1 + 3x + -7x

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

Solving
9 = 1 + -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.
9 + 4x = 1 + -4x + 4x

Combine like terms: -4x + 4x = 0
9 + 4x = 1 + 0
9 + 4x = 1

Add '-9' to each side of the equation.
9 + -9 + 4x = 1 + -9

Combine like terms: 9 + -9 = 0
0 + 4x = 1 + -9
4x = 1 + -9

Combine like terms: 1 + -9 = -8
4x = -8

Divide each side by '4'.
x = -2

Simplifying
x = -2

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