3-x>15 (Line under >)

Question

3-x>15 (Line under >)

     -

Answer 1

3 - x > 15

 

Subtract 3 from both sides:

 

-x > 12

 

Divide both sides by -4.  When you multiply or divide an inequality by a negative number, it flips the sign, in this case from > to <

 

x < -12

 

<----|----|----|----o----|----|----|----|----|----|----|----|----|----|----|----|----|--->

    -15  -14  -13  -12  -11  -10  -9    -8    -7    -6    -5    -4     -3   -2    -1     0     1