Question

Solve for the variable: -7y < 21

Answer 1

Step 1: -7y < 21
Step 2: y < 21/-7
Step 3: y < -3

So y is any number less than -3 (-4, -5 ... till -infinity)

Answer 2

@manojonline
-7y < 21 1st we multiply both sides with (-1) so < becomes >
7y>-21
y>-21/7
Y>-3
Y in ]-3;+infinity[

Answer 3

Yes you are right. Forgot, the inequality changes when multiplied by a negative number.