Answer:
No
Step-by-step explanation:
(x,y)=(4,-1)
73x+5y=7
73*4+5*(-1)=287
____________________________
175x−3y=17
175*4-3*(-1)=703
Solve the equation for X.
1 answer:
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Well... looking at proportions, we're being asked 
No, we do not multiply the first equation by 2 and then add it to the second equation. We have to multiply the first equation by 4.
To illustrate this point, consider system A:
If we multiply the first equation by 2, we get
Now, if we replace the second equation with the sum of the second equation and , we get
which simplifies to
This is not an equivalent system to System B. We can see that we ended up with a 2y = 4 equation.
In order to end up with a 2x = 10 second equation, we have to multiply the first equation of system A by 4 to get
If we replace the second equation with the sum of the second equation and , we get
which simplifies to
Otherwise, you are correct. The solution to system B is the solution to system A. Adding an equation to another does not change the system.