Question

Solve the following system of equations:

x - 2y = 14
x + 3y = 9

(1, 12)

(-1, -12)

(12, -1)

(12, 1)

Answer 1

okay let's focus on the second equation first.
x+3y=9
let's get x by it self
x=-3y+9
now. place this in for y in the first equation and solve for y
(-3y+9)-2y=14
simplify
-5y+9=14
-9 from both sides
-5y=5
divide by -5
y=-1
plug this in ether equation so I'm going to place it in the second one
x+3(-1)=9
simplify
x+ -3=9
+3 both side
x=12
that means the answer is
x=12
y=-1
(12,-1)
Hope this helps!

Answer 2

thank you so much :3 can u help me with 2 more ?

Answer 3

sure

Answer 4

Solve the following system of equations:

-2x + y = 1
-4x + y = -1

(3, 1)

(-1, 3)

(-1, -3)

(1, 3)

Answer 5

and thx :3

Answer 6

okay here is this one.
start with the first equation.
get y by itself
y=2x+1
plug that in to the second question
-4x+(2x+1)=-1
simplify and solve for x
2x+1=-1
2x=-2
x=-1
plug this in to any equation i'm going to go with the second one
-4x+y=-1
-4(-1)+y=-1
4+y=-1
y=5....hmmm

Answer 7

oh ok thank you so much :3

Answer 8

it's (1,3)

Answer 9

is that it?

Answer 10

u think so ^-^ thank you so much for your help :)

Answer 11

haha your welcome :)
Good luck!

Answer 12

thank ^-^