Question

Which is the value of y in the following system? y=3x-5 6x+3y=15

Answer 1

The value of y in the solution of the system is
`y=1`

Explanation:

we have

`y=3x-5` -----> equation A

`6x+3y=15` -----> equation B

substitute equation A in equation B

`6x+3(3x-5)=15`

`6x+9x-15=15`

`15x=15+15`

`15x=30`

`x=2`

Find the value of y

`y=3(2)-5=1`