what is the equation answer to 8x-20y=-48 -8x+2y=12?

Answer 1

-8x+2y=12
2y=8x+12
y=4x+6

8x-20y=-48
8x=20y-48
8x=20(4x+6)-48
8x=80x+120-48
8x=80x+72
-72x=72
-x=1
x=-1

-8x+2y=12
-8(-1)+2y=12
8+2y=12
2y=4
y=2

Answer 2

8x -20y = - 48
-8x + 2y = 12

+8x -8x Cancell

- 18y = -36

- 18y/18 = -36/- 18

Dividing both sides by - 18

y = 2

Insert 2 into the y position

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8x - 20y = -48

8x - 20(2) = - 48

8x -40 = - 48
+ 40 + 40
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Add + 40to both sides of the equation

8x = - 8

The new equation after addition

8x/8 = - 8/8

x = - 1

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Y = 2

x = - 1

Insert the x and y values into the equationos.

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Proof for equation 8x - 20y = - 48

8(- 1) - 20(2) = - 48

-8 - 40 = - 48

-48 = - 48

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Proof of equation - 8x + 2y = 12

- 8(- 1) + 2(2) = 12

8 + 4 = 12

Multiplying - 8 (- 1) equals 8

8 + 4 =12

12 = 12

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The answer is:

x = - 1

Y = 2

Answer 3

Rather than just give the answer I'll walk you through it:

8x - 20y = -48
+
-8x + 2y = 12

(8x + -8x) + (-20y + 2y) = (-48 + 12)
(0) + (-18y) = (-36)
-18y = -36
18y = 36
y = 2

So now we can substitute this value back into one of the original equations:

-8x + 2y = 12
-8x + 2(2) = 12
-8x + 4 = 12
-8x = 12 - 4
-8x = 8
x = -1

So there we have the answers, x = -1 and y = 2, hope that helped you out.

Answer 4

8x - 20y = -48
-8x + 2y = 12

Add the two equations together (the Elimination Method)

( 8x -8x) + (-20y + 2y) = (-48 + 12)
0 - 18y = -36
y = 2


Substitute 2 in for "y"
8x - 20(2) = -48
8x - 40 = -48
8x = -8

x = -1
y = 2

Answer 5

8x - 20y = -48 -8x + 2y = 12
8x = 20y - 48
x = (20/8)y - 48/8

-20y + 48 + 2y = 12
-18y + 48 = 12
y = -36/-18 = 2
x = (20/8)*2 - 48/8 = -1

Answer 6

What a freshman lesson??

-8x+2y=12
2y=8x+12
y=4x+6

8x-20y=-48
8x=20y-48
Substitute (4x+6) to y
8x=20(4x+6)-48
8x=80x+120-48
8x=80x+72
-72x=72
-x=1

x=-1

Substitute (-1) to x

-8x+2y=12
-8(-1)+2y=12
8+2y=12
2y=4

y=2

Therefore x=-1 and y=2

Answer 7

8x-20y=-48………..(1)
-8x+2y=12……… (2)
adding (1) and (2) –18y=-36 and so y=2. substituting
value of y in (2) –8x+4=12 =>-8x=8 and so x=-1
so the solution set is{-1,2}

Answer 8

y=2
x=-1