Seudónimo Seudónimo
  • 12-07-2014
  • Mathematics
contestada

what value of a makes the equation true? 9a+2=4a-18

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mariamikayla
mariamikayla mariamikayla
  • 12-07-2014
[tex]9a+2=4a-18 \\9a-4a= -18-2 \\ 5a= -20 |:5 \\a= -4[/tex]
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Аноним Аноним
  • 12-07-2014
[tex]9a+2=4a-18\ \ \ \ /-2\\\\9a=4a-20\ \ \ \ /-4a\\\\5a=-20\ \ \ \ /:5\\\\a=-4[/tex]
Answer Link

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