Question

Solve the system of equations

x - y = 10
2x + y = 2

Answer 1

Solving Simultaneously:
X=-4 & Y=6.

Answer 2

re- arrange your first equation
x = 10+y (got by adding y on both sides.)
now put this value of x in the second equation

Answer 3

x-y=10
x=10+y

Now putting the value in the next equation

2(10+y)+y=2
20+2y+y=2
20+3y=2
3y=-18
y=-6

Now put the value of y in eq.(x=10+y) to get x :)

Answer 4

they used substitution method which is fine but you can add these equations
since -y and y = 0 giving you x only.

x - y = 10
2x + y = 2
____________
3x +0 =12
divide by 3
x=4
substitute in 1st equation
4-y=10
subtract 4 from both sides
-y=6
change sides by multiplying both sides by -1
y=-6

just a different way

Answer 5

if you go to freemathhelp.com and scrolldown you will get an answer for any equations