derioid2345 derioid2345
  • 26-08-2017
  • Mathematics
contestada

if -2x+xy=30 and y=8,then what is the value of x?

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texaschic101
texaschic101 texaschic101
  • 26-08-2017
-2x + xy = 30.....when y = 8

-2x + 8x = 30
6x = 30
x = 30/6
x = 5 <==
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Eduffy8
Eduffy8 Eduffy8
  • 26-08-2017
ok so plug 8 in for y so the equation equals -2x+8x=30 then combine like terms so it equals 6x=30 then divide 30 by 6 to get x=5
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