What is the value of x in the solution of the system of equations below?
8x-y=20
Y=3x

32-12=20 or x=4

Step-by-step explanation:

This is basically saying 8x-3x=20

so first you want to do 8x-3x to end up with 5x

then from there you have the equation..

5x=20

in order to figure out what x is you need to divide 20 by five so you just have the x and get rid of the 5

so 20 divided by 5 = 4

this means x=4 but you need to plug it into the equation

8x= 8 times 4 = 32   and   3x= 3 times 4 = 12

so 32-12=20

a negative exponent is translated as follows:

so, we have

99

step-by-step explanation: