23+28-x=30

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Solution for 23+28-x=30 equation: 


Simplifying
23 + 28 + -1x = 30

Combine like terms: 23 + 28 = 51
51 + -1x = 30

Solving
51 + -1x = 30

Solving for variable 'x'.

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

Add '-51' to each side of the equation.
51 + -51 + -1x = 30 + -51

Combine like terms: 51 + -51 = 0
0 + -1x = 30 + -51
-1x = 30 + -51

Combine like terms: 30 + -51 = -21
-1x = -21

Divide each side by '-1'.
x = 21

Simplifying
x = 21

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