The solution set of the given inequality -7x < -21 is {x | x > 3}.
Define the term inequality?
- In mathematics, "inequality" refers to a relationship involving two variables or values that aren't even equal to one another.
- Mathematical expressions with inequalities are those in which the two sides are not equal.
- Contrary to equations, we compare different values in inequality. Less than (and less than and equal to), greater than (and greater or equal to), or just not equal to signs are used in place of the equal sign.
For the stated question-
The given inequality is-
-7x < -21
Dividing both side by -1 will change the direction of the sign.
7x > 21
Now, divide both side by 7
7x/7 > 21/7
x > 3 (solution set)
Thus, the solution set of the given inequality -7x < -21 is {x | x > 3}.
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