Find the solution to each system by the substitution method. Check your answers for exercises 15-18.
3x-5y=7
x-4y=-7

Question

Find the solution to each system by the substitution method. Check your answers for exercises 15-18.
3x-5y=7
x-4y=-7

anonymous · Answer

So if you add 4y to second would be x=-7+4y now plug this into first equation 
So 3(-7+4y)-5y=7 once u get y plug it in to get x

anonymous · Answer

What then do u get ?

anonymous · Answer

For my y I got this if you can tell me if it was right y=28/7=4. So y=4.
What is the next formula for x can you please help me?

anonymous · Answer

I'm so sorry I just having problems I get don't understand it. sorry again

anonymous · Answer

ok if I did that and I got for x is 43 is that right. Thank you for helping me out on this.

anonymous · Answer

Ok here equation is x-4(4)=-7

anonymous · Answer

X-16=-7 add 16 to -7 to isolate x and answer should be x=9

anonymous · Answer

ok thank you so much for your help.

anonymous · Answer

:) no problem

anonymous · Answer

Now to check your answer plug in the x and y values 
So 3(9)-5(4)=7 ?