4-x-5=7

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Solution for 4-x-5=7 equation: 


Simplifying
4 + -1x + -5 = 7

Reorder the terms:
4 + -5 + -1x = 7

Combine like terms: 4 + -5 = -1
-1 + -1x = 7

Solving
-1 + -1x = 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 + -1x = 7 + 1

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

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

Divide each side by '-1'.
x = -8

Simplifying
x = -8

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