3-x=x-7

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Solution for 3-x=x-7 equation:


Simplifying
3 + -1x = x + -7

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

Solving
3 + -1x = -7 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
3 + -1x + -1x = -7 + x + -1x

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

Combine like terms: x + -1x = 0
3 + -2x = -7 + 0
3 + -2x = -7

Add '-3' to each side of the equation.
3 + -3 + -2x = -7 + -3

Combine like terms: 3 + -3 = 0
0 + -2x = -7 + -3
-2x = -7 + -3

Combine like terms: -7 + -3 = -10
-2x = -10

Divide each side by '-2'.
x = 5

Simplifying
x = 5

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