2 years ago

Solve this system 2x-4y=14 3y+5x=9

Mathematics

1 answer:

anygoal [31]2 years ago

8 0

Answer:

x=3, y=-2

Step-by-step explanation:

If 2x-4y=14, then we know that 2x=14+4y. This means that x=7+2y. If we substitute this into the next equation we get: 3y+(35+10y)=9. This means that we have 35+13y=9. If we subtract 35 from both sides we get 13y=-26. This means y=-2. If you subsitute this in the first equation, we have 2x--8=14. -- means + so you do 2x+8=14. This means that x=3.

btw this is my first answer so sorry if its bad.

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What is the value of this expression when x=2 and y=-4? -3(x-y)2

Llana [10]

Answer:

-108

Step-by-step explanation:

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