Answer: -6+13=7
Step-by-step explanation:
Step-by-step explanation:
decrease value is 1353
value 31,647
$38.95-$29.95= $9
$9= 900¢
900¢/3¢= 300
Ans: She used 300 minutes.
3(-1.5) + 4 = -0.5
3(0.5) + 4 = 5.5
For this case we have the following system of equations:

We multiply the first equation by -4:

We have the following equivalent system of equations:

We add the equations:

We find the value of the variable "x":

Thus, the solution of the system is:

See the graphic in the attached image
ANswer:

See the graphic in the attached image