magdlenejekkar
04.11.2019 •
Mathematics
Wmany solutions does this linear system have? y = 2x – 5 –8x – 4y = –20
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Ответ:
-8x-4(2x-5)=-20
-8x-8x+20=-20
-16x+20=-20
-16x=-40
x=2.5
Plug x into one of the original equations.
y=2(2.5)-5
y=5-5
y=0
Final 1 solution (2.5, 0)
Ответ:
15