3x-(x-1)=-7

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Solution for 3x-(x-1)=-7 equation:


Simplifying
3x + -1(x + -1) = -7

Reorder the terms:
3x + -1(-1 + x) = -7
3x + (-1 * -1 + x * -1) = -7
3x + (1 + -1x) = -7

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

Combine like terms: 3x + -1x = 2x
1 + 2x = -7

Solving
1 + 2x = -7

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + 2x = -7 + -1

Combine like terms: 1 + -1 = 0
0 + 2x = -7 + -1
2x = -7 + -1

Combine like terms: -7 + -1 = -8
2x = -8

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

Simplifying
x = -4

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