Which of these shows the result of using the first equation to substitute fory in the second equation, then combining like terms? y- 3x 3x+ 2y= 18 OA. 3y 18 B. 9x= 18 OC. 6x= 18 OD. 3x= 18 m

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Misha Vyrko asked May 7, 2023

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24 votes

Which of these shows the result of using the first equation to substitute fory in the second equation, then combining like terms? y- 3x 3x+ 2y= 18 OA. 3y 18 B. 9x= 18 OC. 6x= 18 OD. 3x= 18 m

Mathematics
college

Misha Vyrko asked May 7, 2023

by Misha Vyrko

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1 Answer

11 votes

$\begin{gathered} \text{ We have } \\ y=3x, \\ 3x+2y=18 \\ \text{ So, replaceng the value of y, we have} \\ 3x+2(3x)=18 \\ 3x+6x=18 \\ 9x=18 \end{gathered}$

Lurning Too Koad answered May 14, 2023