Question

Solve this system of equations using elimination
x + 2y = 13
4x + 8y = -9

Answer 1

is this algebra 1?

Answer 2

Algebra 2

Answer 3

give me a minute..

Answer 4

ok @GamerGirl.1

Answer 5

First decide whether there to add or subtract the equations.Remember that the addition or subtraction should eliminate one variable. In the system above,the x in each equation is positive,so we need to subtract,that is,change all the signs of the terms in the second equation

Answer 6

brb

Answer 7

?

Answer 8

Solve this system of linear equations:

x + 2y = 13
4x + 8y = -9


Multiply the first equation (every term!) by -4. You'll see why, in a moment.

What do you get? Type your result here.

Answer 9

-4x-8y=-52

Answer 10

@mathmale I need to keep atleast one variable?

Answer 11

Good.


4x + 8y = -9 (this is your second equation)
-4x - 8y = -52 (this is your modified first equation)
What would happen if you were now to add like terms together? (Add 4x-4, 8y-8y, etc.)

Answer 12

So the answer is no solutions?

Answer 13

yes, correct. No solution is the answer, because you can't have "4x+8y" be equal to -9 and at the same time be equal to 52