-7x>21
Divide each term in -7x>21 by -7. When multiplying or dividing both sides of an inequality by a negative value, flip the direction of the inequality sign.
-7x-7<21-7
Cancel the common factor.
-7x-7<21-7
Divide x by 1.
x<21-7
x<21-7
Divide 21 by -7.
x<-3
The result can be shown in multiple forms.
Inequality Form:
x<-3
Interval Notation:
(-∞,-3)
Solve for x -7x>21
