A system of equations is shown below:
-3x + 7y = -16
-9x + 5y = 16
Part A: Create an equivalent system of equations by replacing one equation with the sum of that equation and a multiple of the other. Show the steps to do this. (6 points)
Part B: Show that the equivalent system has the same solution as the original system of equations.
Stacey Warren - Expert brainly.com
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for part A?
yes can you post the solution to part A
-6x+14y=-32 I got this I multiplied first equation by 2
ok.... this is what I would have done
I would multiply every term in the 1st equation by -3.
this would allow you to eliminate x
equation 2 doesn't change
9x - 21y = 48
-9x +5y = 16 add the 2 equations
-16y = 64
so y = -4
substitute this into either of the original equations to find x.
does that make sense...?
yes thanks you soo much
ok... so when you get the solution
part B seems to be asking you to substitute the values into
9x - 21y = 48 to show the solution is correct