Asked by Scarlet

7x + 5 = y
3.5x + 20 = y

Solve the system of equations. What method did you use to solve the system and why? Show your work.

Can someone please explain to me the process of solving the system? That would be nice. Thanks! (=
Answered by Damon
LOL - I wondered when you would ask.

both are y, so
7 x + 5 = 3.5 x + 20

that is called "substitution"

3.5 x = 15

x = 4.29
go back and get y

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you could also subtract the two equations to get rid of y

7x-3.5 x + 5-20 = 0
that is called "elimination".
Answered by Scarlet
Ok, I think I understand, not really, but kinda...so thanks anyway.
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