SOLUTION: Solve the system of equations by graphing. Then classify the system. x+y=7 and x-y=5.

Algebra.Com
Question 560027: Solve the system of equations by graphing. Then classify the system. x+y=7 and
x-y=5.

Answer by Maths68(1474)   (Show Source): You can put this solution on YOUR website!
x+y=7..........(1)
x-y=5..........(2)
Add (1) and (2)
x+y=7
x-y=5
--------
2x=12
2x/2=12/2
x=6
Put the value of x in (1)
x+y=7
6+y=7
y=7-6
y=1
x,y=6,1
Check
=====
Put the values of x and y in (1)
x+y=7
6+1=7
7=7
Put the values of x and y in (2)
x-y=5
6-1=5
5=5

RELATED QUESTIONS

Solve the system of equations by graphing. Then classify the system. x=5 y=-6 (answered by Fombitz)
Solve the system of equations by graphing. Then classify the system. x+y=7... (answered by stanbon)
Solve the system of equations by graphing. Then classify the system. X+y=7 X+y=-1 (answered by rapaljer)
solve the system of equations by graphing. then classify the system x+y=13... (answered by rapaljer)
solve the system of equations by graphing. Then Classify the system. x+y=13 x-y=... (answered by drj)
Solve the system of equations by graphing, then classify the system. X+Y=5... (answered by richwmiller)
Solve the system of equations by graphing. Then classify the system as consistent or... (answered by jim_thompson5910)
x+y=6 x-y=-4 solve the system of equations by graphing then classify the... (answered by stanbon)
x+y=13 x-y=-3 solve the system of equations by graphing then classify the... (answered by Alan3354)