What is x+8y=-15 7x+8y=-19

You would subtract the x and move it over to the other side so your equation would be

8y = - 15 + x

you would then divide everything by 8 so you can have y on its own so it would be

y = - 15/8 + x/8

so your final equation is

y=-15/8 + 8x

for the second equation it's the same thing, you subtract 7x

8y = - 19 + 7x

divide by 8

y = - 19/8 + 7/8x

x = - 15 - 8 y

y=-7/8x-19/8

Step-by-step explanation:

If you are trying to solve for x the answer for first problems is

x = - 15 - 8 y

second problem the slope intercept form is:

y=-7/8x-19/8

I'm not sure exactly what you are looking for but I hope that is it.