4+16-(-1)=

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Solution for 4+16-(-1)= equation:


4+16-(-1)=0

We simplify the equation to the form, which is simple to understand 
4+16-(-1)=0

Remove unnecessary parentheses
4+16+1=0

We move all terms containing  to the left and all other terms to the right. 
0=0-4-16-1

We simplify left and right side of the equation. 
0=-21

0=-21

The left and right sides are not equal, therefore there is no solution. This equation is invalid.

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