SeidonR519645 SeidonR519645
  • 03-11-2022
  • Mathematics
contestada

5x + 2y = 19 -x + 2y = 1

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KhennediM567231 KhennediM567231
  • 03-11-2022

The given expressions are,

[tex]\begin{gathered} 5x+2y=19\ldots\text{.}\mathrm{}(1) \\ -x+2y=1\ldots\text{.}\mathrm{}(2) \end{gathered}[/tex]

From the second equation, we have,

[tex]x=2y-1\ldots\text{.}\mathrm{}(3)[/tex]

Substituting this value in the first equation, we have,

[tex]\begin{gathered} 5(2y-1)+2y=19 \\ 10y-5+2y=19 \\ 12y=19+5 \\ 12y=24 \\ y=\frac{24}{12}=2 \end{gathered}[/tex]

Now, substituting this value of y in equation 3, we have,

[tex]x=2\times2-1=4-1=3[/tex]

Thus, the solution is x = 3 and y = 2

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