4+5+x=28

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Solution for 4+5+x=28 equation: 


Simplifying
4 + 5 + x = 28

Combine like terms: 4 + 5 = 9
9 + x = 28

Solving
9 + x = 28

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + x = 28 + -9

Combine like terms: 9 + -9 = 0
0 + x = 28 + -9
x = 28 + -9

Combine like terms: 28 + -9 = 19
x = 19

Simplifying
x = 19

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