A relationship between two expressions or values that are not equal to each other is called 'inequality. Z≤ -10.5 is the solution for inequality 21 ≤ −4z − 21.
What is Inequality?
A relationship between two expressions or values that are not equal to each other is called 'inequality.
The given inequality is twenty one lesser or equal to minus four z minus twenty one.
21 ≤ −4z − 21.
We need to solve for z
Let us add twenty one on both sides
21+21≤ −4z − 21+21
42≤ −4z
Divide both sides by 4
10.5≤ -Z
-10.5≥Z
Z≤ -10.5
Hence Z≤ -10.5 is the solution for inequality 21 ≤ −4z − 21.
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