Find the best answers to your questions at Westonci.ca, where experts and enthusiasts provide accurate, reliable information. Join our platform to get reliable answers to your questions from a knowledgeable community of experts. Experience the convenience of finding accurate answers to your questions from knowledgeable experts on our platform.

Solve the system. Estimate the solution first. Enter whole numbers for the estimated solution andimproper fractions in simplest form for the algebraic solution.6x + y = 2x - 4y = 2The estimated solution isThe algebraic solution is

Sagot :

We need to solve the following system:

[tex]\begin{cases}6x+y=2 \\ x-4y=2\end{cases}[/tex]

The first step we need to take is to multiply the first equation by 4.

[tex]\begin{cases}24x+4y=8 \\ x-4y=2\end{cases}[/tex]

Then we have to add both equations:

[tex]\begin{gathered} 25x=10 \\ x=\frac{10}{25} \end{gathered}[/tex]

Now we have to replace this value of x on the second equation:

[tex]\begin{gathered} \frac{10}{25}-4y=2 \\ -4y=2-\frac{10}{25} \\ -4y=\frac{50-10}{25} \\ -4y=\frac{40}{25} \\ y=-\frac{40}{100} \end{gathered}[/tex]

The estimated solution is (10/25, -40/100). Now we need to simplify it:

[tex]\begin{gathered} x=\frac{10\colon5}{25\colon5}=\frac{2}{5} \\ y=-\frac{40\colon20}{100\colon20}=-\frac{2}{5} \end{gathered}[/tex]

The algebraic solution is (2/5, -2/5)