Question

Solve each question using substitution or elimination: x-2y=-18 and 3x+4y=6

Answer 1

You can start solving this by multiplying eq two by 3 and then subtracting the two

Answer 2

why?

Answer 3

We are trying to solve for y first. When you proceed with the method i mentioned above you can convert your equation in two variables to equation in a single variable. Which you can solve easily

Answer 4

Ok I got a possible answer which is x=5, did I answer the question?

Answer 5

please recheck your answer

Answer 6

What did I do wrong

Answer 7

x=-6?

Answer 8

y = 6 and x= -6 because:

x= -18+2y so
3(-18+2y) +4y=6
-54+6y+4y =6
10y =60
y=6

Answer 9

ok thanks a bunch

Answer 10

I think x is -4