19=42-x

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Solution for 19=42-x equation:


Simplifying
19 = 42 + -1x

Solving
19 = 42 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
19 + x = 42 + -1x + x

Combine like terms: -1x + x = 0
19 + x = 42 + 0
19 + x = 42

Add '-19' to each side of the equation.
19 + -19 + x = 42 + -19

Combine like terms: 19 + -19 = 0
0 + x = 42 + -19
x = 42 + -19

Combine like terms: 42 + -19 = 23
x = 23

Simplifying
x = 23

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