19mjjenkins 19mjjenkins
  • 04-09-2015
  • Mathematics
contestada

For what value of a is a(2x+3)=9x+15+x an identity?

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konrad509
konrad509 konrad509
  • 04-09-2015
[tex]a(2x+3)=9x+15+x\\ 2ax+3a=10x+15\\\\ 2a=10 \wedge 3a=15\\ a=5 \wedge a=5\\\\ \boxed{a=5} [/tex]
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