Question

A system of equations is shown below.

-3x+7y=-16
-9x +5y=16

Part A: Create an equivalent system of equations by replacing one question with the sum of that equation and a multiple of the other. Show the steps to do this.

Part B: Show that the equivalent systems has the same solution as the original systems of equations.

Answer 1

Please need help ASAP

Answer 2

-3*(-3x+7y=-16 )
+ (-9x+5y=16)
--------------------
-16y= 4*16

Answer 3

@math&ing001 can you help me with part b?

Answer 4

@Loser66 ?

Answer 5

The 2 systems have the same solution set because you can find the initial equations from those obtained later.

Answer 6

Oh, is that part B? @math&ing001

Answer 7

Yes !

Answer 8

Thank you!

Answer 9

You're welcome :)