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LuckyWell [14K]
4 years ago
13

Find the number of solutions : 4x-2y=8 y=2x+8

Mathematics
2 answers:
Fiesta28 [93]4 years ago
4 0
I think it would be no solution
4x-2(2x+8)=8
4x-4x+16=8
0x+16=8
16=8
which is wrong
kifflom [539]4 years ago
3 0
\begin{cases} 4x-2y=8 \\ y=2x+8  \end{cases} \\ \\\begin{cases} 4x-2y=8 \\-2x+ y= 8  \ \ /*2\end{cases}\\ \\\begin{cases} 4x-2y=8 \\-4x+ 2y= 16  \ \ /*2\end{cases} \\+ \ \ -------- \\ 0=24 \\ \\  Answer : \ no  \ solution
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