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Vanyuwa [196]
3 years ago
15

How do you solve this kind of problem?

Mathematics
2 answers:
trasher [3.6K]3 years ago
4 0
-x•(83x-30)

Try and see if that's correct



Y_Kistochka [10]3 years ago
3 0
I hope this helps you

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hichkok12 [17]

\it \begin{cases}\it4x+5y=7&#10;\\\;\\ \it y=3x+9 \ \ \ \ (*) \end{cases}


\it 4x+5y=7 \stackrel{(*)}{\Longrightarrow} 4x+5(3x+9) = 7 \Rightarrow 4x+15x+ 45 =7 \Rightarrow  &#10;\\\;\\&#10;\Rightarrow 4x+15x=7-45 \Rightarrow  19x= -38 \Rightarrow  x = \dfrac{-38}{19} \Rightarrow  x= -2



\it x=-2 \stackrel{(*)}{\Longrightarrow} y=3\cdot(-2) +9 \Rightarrow y=-6+9 \Rightarrow  y=3&#10;\\\;\\&#10;So,\ we\ have: \begin{cases} \it x=-2&#10;\\\;\\&#10;\it y=3\end{cases}





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4 years ago
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Sav [38]

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kiruha [24]

were are the answer choices

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Oduvanchick [21]

The <em>correct answer</em> is:

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