1-x=4+17

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Solution for 1-x=4+17 equation: 


Simplifying
1 + -1x = 4 + 17

Combine like terms: 4 + 17 = 21
1 + -1x = 21

Solving
1 + -1x = 21

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + -1x = 21 + -1

Combine like terms: 1 + -1 = 0
0 + -1x = 21 + -1
-1x = 21 + -1

Combine like terms: 21 + -1 = 20
-1x = 20

Divide each side by '-1'.
x = -20

Simplifying
x = -20

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