2X-X-7=-1

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Solution for 2X-X-7=-1 equation: 


Simplifying
2X + -1X + -7 = -1

Reorder the terms:
-7 + 2X + -1X = -1

Combine like terms: 2X + -1X = 1X
-7 + 1X = -1

Solving
-7 + 1X = -1

Solving for variable 'X'.

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

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

Combine like terms: -7 + 7 = 0
0 + 1X = -1 + 7
1X = -1 + 7

Combine like terms: -1 + 7 = 6
1X = 6

Divide each side by '1'.
X = 6

Simplifying
X = 6

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