Question

Systems of Equations
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Answer 1

So the generic idea for this is, isolate one variable in one of the equations and substitute it into the second equation, so lets take your first equation 5x-20y=5
pick x or y to isolate, and once you do that take the whole function and substitute it for that variable in 5x+20y=45

Answer 2

Okay lets isolate x

Answer 3

Sure, so can you do it?

Answer 4

I havent done theses questions in a long time. If i can get one example I am sure I can figure out the rest

Answer 5

you can do the simplifying.