17+(-s)=21

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Solution for 17+(-s)=21 equation: 


Simplifying
17 + (-1s) = 21

Solving
17 + (-1s) = 21

Solving for variable 's'.

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

Add '-17' to each side of the equation.
17 + -17 + (-1s) = 21 + -17

Combine like terms: 17 + -17 = 0
0 + (-1s) = 21 + -17
(-1s) = 21 + -17

Combine like terms: 21 + -17 = 4
(-1s) = 4

Divide each side by '-1'.
s = -4

Simplifying
s = -4

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