7-9=x-4

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Solution for 7-9=x-4 equation:


Simplifying
7 + -9 = x + -4

Combine like terms: 7 + -9 = -2
-2 = x + -4

Reorder the terms:
-2 = -4 + x

Solving
-2 = -4 + 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.
-2 + -1x = -4 + x + -1x

Combine like terms: x + -1x = 0
-2 + -1x = -4 + 0
-2 + -1x = -4

Add '2' to each side of the equation.
-2 + 2 + -1x = -4 + 2

Combine like terms: -2 + 2 = 0
0 + -1x = -4 + 2
-1x = -4 + 2

Combine like terms: -4 + 2 = -2
-1x = -2

Divide each side by '-1'.
x = 2

Simplifying
x = 2

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