Question

x+y=2
x-y=4
2x-2y=8
Mana nih RedAsta?​

Answer 1

Jawaban:

x+y= 2xy

x-y= 1xy

2x-2y= 2xy

Penjelasan dengan langkah-langkah:

Maaf kalo salah

Answer 2

Verified answer

[tex]\begin{cases} \sf \ \ x + y = \sf 2 \dots(1) \\ \sf 2x - 2y = \sf 8 \Rightarrow2(x - y) = 8 \Rightarrow x - y = 4 \dots(2)\end{cases}[/tex]

•› Eliminasi x

[tex]\begin{aligned} \sf \not\!x + y &= \sf 2 \\ \underline{\qquad \quad \quad}\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\not\!\sf x - y &= \sf4 \ - \\ \sf2y &= \sf -2 \\ \sf y &= \sf \frac{-2}{2} \\ \sf y &= \sf -1\end{aligned}[/tex]

•› Eliminasi y

[tex]\begin{aligned} \sf x \ + \not\!y &= \sf 2 \\ \underline{\qquad \quad \quad}\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\sf x \ - \not\!y &= \sf4 \ + \\ \sf2x &= \sf 6 \\ \sf y &= \sf \frac{6}{2} \\ \sf y &= \sf 3\end{aligned}[/tex]

HP = {-1, 3}

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