Question

why wont anyone help

Answer 1

A system of equations is given below.
2x + 7y = 1
-3x – 4y = 5

Create an equivalent system of equations by replacing the first equation by multiplying the first equation by an integer other than 1, and adding it to the second equation.
Use any method to solve the equivalent system of equations (the new first equation with the original second equation).
Prove that the solution for the equivalent system is the same as the solution for the original system of equations.

Answer 2

please help

Answer 3

hmm @LizzyMcWire

Answer 4

plwese help

Answer 5

You should do as the problem says and multiply the first equation by some integer, then add that new equation to the second

Answer 6

can you please show how

Answer 7

Multiply it by 2 and tell me what you get

Answer 8

4x+14y=2
-6x-8y=10

Answer 9

now what?

Answer 10

yeah lizzy saved me

Answer 11

@LizzyMcWire you still there

Answer 12

Don't multiply the bottom by 2, just the top

Answer 13

Then add the top to the bottom

Answer 14

1x+10y=7

Answer 15

@LizzyMcWire

Answer 16

Now that will be the new first equation. Solve the system using that as the first equation with the original second equation.

Answer 17

can you please show how. cause im getting confused

Answer 18

1x+10y=7
-3x-4y=5

Answer 19

okay so that is the answer for the first question?

Answer 20

No, you need to solve it now, find one variable first then use that info to find the other like you normally do

Answer 21

so its -2x+6y=12

Answer 22

Isolate one variable, then set it equal to that when you redo the problem

Answer 23

-2x=12+6y

Answer 24

x=-3y-6

Answer 25

so thats the answer for question 1 ?

Answer 26

@LizzyMcWire