JuandiegoQ382216 JuandiegoQ382216
  • 25-10-2022
  • Mathematics
contestada

i missed class yesterday. we have an assignment to do. i don’t understand and need help.

i missed class yesterday we have an assignment to do i dont understand and need help class=

Respuesta :

IzelX321721 IzelX321721
  • 25-10-2022

The given system is:

[tex]\begin{gathered} 8x+11y=37 \\ 8x+y=7 \end{gathered}[/tex]

Notice that the coefficients of x in both equations are the same.

Therefore, Subtract the first equation form the second to eliminate the variable x:

[tex]\begin{gathered} 8x-8x+11y-y=37-7 \\ 10y=30 \\ y=\frac{30}{10}=3 \end{gathered}[/tex]

Substitute y = 3 into the second equation:

[tex]\begin{gathered} 8x+3=7 \\ 8x=7-3=4 \\ x=\frac{4}{8}=\frac{1}{2} \end{gathered}[/tex]

Hence, the solution of the system is:

x = 1/2 and y = 3

Answer Link

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