JetonL397232 JetonL397232
  • 03-11-2022
  • Mathematics
contestada

Solve using substitution. 6x + y = 5 -8x - 5y = 19 how do I do this

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AbB543341 AbB543341
  • 03-11-2022

The given system of equations is

[tex]\begin{gathered} 6x+y=5 \\ -8x-5y=19 \end{gathered}[/tex]

To solve the system, first, let's multiply the first equation by 5.

[tex]\begin{gathered} 30x+5y=25 \\ -8x-5y=19 \end{gathered}[/tex]

Then, we combine the equations

[tex]\begin{gathered} 30x-8x+5y-5y=25+19 \\ 22x=44 \\ x=\frac{44}{22} \\ x=2 \end{gathered}[/tex]

Now, we find y

[tex]\begin{gathered} 6x+y=5 \\ 6\cdot2+y=5 \\ 8+y=5 \\ y=5-8 \\ y=-3 \end{gathered}[/tex]

Hence, the solution is (2,-3).

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