Question

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

Answer 1

32-12=20 or x=4

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

Answer 2

x=4

where y =3x

8x-3x=20

5x=20

5x/5=20/5

x=4