SOLUTION: Suppose x and y satisfy both of follwing equations below. Then y = ? x-3y=7 and 2x+4y=5 Thanks.

Question 44009: Suppose x and y satisfy both of follwing equations below. Then y = ?
x-3y=7 and 2x+4y=5
Thanks.
Answer by adamchapman(301) (Show Source): You can put this solution on YOUR website!
x-3y=7 ..1
2x+4y=5 ..2
Rearrange equation (..1):
x=3y+7 ..3
Substitute equation (..3) into equation (..2) for x:
2(3y+7)+4y=5
6y+14+4y=5
10y+14=5
10y=-9
y=-0.9 ..4
Substitute equation (..4) into equation (..3) for y:
x=-2.7+7
x=4.3
I hope this helps.
P.S. I am trying to start up my own homework help website. I would be extremely grateful if you would send me your feedback on my help to adam.chapman@student.manchester.ac.uk
RELATED QUESTIONS
Determine if the following equations are linear. 3x + 2(x-4y)=2x-y x-3 over 2 = 4+y... (answered by stanbon)

Does the point (1,2) satisfy both of the following equations? Show work 2x-3y=-4 and... (answered by Alan3354)

What is the maximum value of k, if the solutions for the two equations below are the... (answered by Edwin McCravy)

The real numbers x and y satisfy the equations y(2x − 3y) = 19 and x(3x − 4 (answered by drk)

Graph the follwing functions: e) y= |-5x| and y=... (answered by jim_thompson5910)

what the follwing system of equation by substitution and check. x-y=13... (answered by mananth)

Can someone please help me with this equation. Find x and y that satisfy the equation (answered by lynnlo)

If y = 9, find the integral values of x and z that satisfy all of the following... (answered by longjonsilver)

Solve for x and y in the following system of equations: 2x + 3y = 5 3x + 4y =... (answered by G Nana)