-21=x-4

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Solution for -21=x-4 equation:


-21=x-4

We simplify the equation to the form, which is simple to understand 
-21=x-4

We move all terms containing x to the left and all other terms to the right. 
-1x=-4+21

We simplify left and right side of the equation. 
-1x=+17

We divide both sides of the equation by -01 to get x. 
x=-17

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