RanyaZ621711 RanyaZ621711
  • 25-10-2022
  • Mathematics
contestada

Which of these shows the result of using the first equation to substitute for y?

Which of these shows the result of using the first equation to substitute for y class=

Respuesta :

AyishaH105645 AyishaH105645
  • 25-10-2022

D) 9x=18

Explanation

given

[tex]\begin{gathered} y=3x\Rightarrow equation(1) \\ 3x+2y=18\Rightarrow equation(2) \end{gathered}[/tex]

Step 1

substitute the y value from equation (1) into equation(2)

so

[tex]\begin{gathered} 3x+2y=18\operatorname{\Rightarrow}equat\imaginaryI on(2) \\ replace \\ 3x+2(3x)=18 \\ 3x+6x=18 \\ add\text{ like terms } \\ 9x=18 \end{gathered}[/tex]

therefore, the answer is

D) 9x=18

I hope this helps you

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