SOLUTION: x=-4y
3x+2y=20
Algebra.Com
Question 118576: x=-4y
3x+2y=20
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given system
Plug in into the first equation. In other words, replace each with . Notice we've eliminated the variables. So we now have a simple equation with one unknown.
Multiply
Combine like terms on the left side
Divide both sides by -10 to isolate y
Divide
Now that we know that , we can plug this into to find
Substitute for each
Simplify
So our answer is and
RELATED QUESTIONS
x = -4y
3x + 2y =... (answered by jim_thompson5910)
3x-2y-x+4y= (answered by sofiyac)
3x-4y-2(x-4y)-2y (answered by ikleyn)
3x-4y-2(x-4y)-2y
(answered by ikleyn)
3x-4y-2(x-4y)-2y
(answered by ikleyn)
4y-(3x+2y)+(5y+x) (answered by rfer)
3x-4y=6... (answered by checkley77)
x+2y=10,... (answered by jim_thompson5910)
3x-4y=12 and... (answered by angphy)