23-x=4

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Solution for 23-x=4 equation: 


Simplifying
23 + -1x = 4

Solving
23 + -1x = 4

Solving for variable 'x'.

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

Add '-23' to each side of the equation.
23 + -23 + -1x = 4 + -23

Combine like terms: 23 + -23 = 0
0 + -1x = 4 + -23
-1x = 4 + -23

Combine like terms: 4 + -23 = -19
-1x = -19

Divide each side by '-1'.
x = 19

Simplifying
x = 19

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