SOLUTION: This is causing stress and can not figure it out? Solve the system by addition or substitution. 20x – 5y = –12 y = 4x + 3

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: This is causing stress and can not figure it out? Solve the system by addition or substitution. 20x – 5y = –12 y = 4x + 3       Log On


   

Question 94411: This is causing stress and can not figure it out?

Solve the system by addition or substitution.
20x – 5y = –12
y = 4x + 3

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
20x+-+5%284x+%2B+3%29+=+-12 Plug in y = 4x + 3

20x+-+20x+-15+=+-12 Distribute



20x-20x=-12%2B15Add 15 to both sides


0x=-12%2B15 Combine like terms on the left side


0x=3 Combine like terms on the right side


0=3 Simplify

Since this equation is never true for any x value, this means there are no solutions.