denisesurlapdktpy denisesurlapdktpy
  • 17-08-2018
  • Mathematics
contestada

3x-4/5(15-10x)=-16

what is the solution?

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taniaorozco
taniaorozco taniaorozco
  • 17-08-2018
3x - 4/5(15 - 10x) = -16

3x - 4(3 - 2x) = -16

3x - 12 + 8x = -16

11x = -16 + 12

11x = -4

x = -4/11 or x = -0.36

hope this helped! (:
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gmany
gmany gmany
  • 17-08-2018

[tex] 3x-\dfrac{4}{5}(15-10x)=-16\ \ \ \ |\text{use distributive property}\ a(b-c)=ab-ac\\\\3x-\dfrac{4}{5}\cdot15-\dfrac{4}{5}\cdot(-10x)=-16\\\\3x-4\cdot3+4\cdot2x=-16\\\\3x-12+8x=-16\\\\11x-12=-16\ \ \ \ |+12\\\\11x=-4\ \ \ \ |:11\\\\x=-\dfrac{4}{11} [/tex]

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