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taylorcolm21
taylorcolm21 taylorcolm21
  • 04-09-2014
  • Mathematics
Answered

0.2 (x+3)-4 (2x-3)=0.9 please solve

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luana
luana luana
  • 04-09-2014

\(0,2(x+3)-4(2x-3)=0,9\\\\\ 0,2x+0,2*3-8x-4*(-3)=0,9\\\\ 0,2x+0,6-8x+12=0,9\\\\-7,8x=0,9-0,6-12\\\\ -7,8x=-11,7\ \ \ |:-7,8\\\\ x=1,5\)

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nivialuisa
nivialuisa nivialuisa
  • 04-09-2014

0.2x+0.6-8x+12=0.9 
0.2x-8x=0.9-0.6-12
-2.8x= -11.7
      x=-11.7:(-2.8)
      x= 4.2

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