Water5566
Water5566 Water5566
  • 07-08-2017
  • Mathematics
contestada

What is the answer? (Tip- to undo multiply both sides by 4/7)

x|4/7 = 28

Respuesta :

royalroyfan1
royalroyfan1 royalroyfan1
  • 07-08-2017

x / |4/7| = 28

Multiply by |4/7|

x = |4/7| x 28

Ignore the absolute for a second and note 4/7 x 28 is 16 because...
28 / 7 = 4
4 x 4 = 16

x = |16|

Answer Link
Apocrophon
Apocrophon Apocrophon
  • 07-08-2017
[tex]\frac{x}{\frac{4}{7}}=28\\\\(\frac{x}{\frac{4}{7}})*\frac{4}{7}=28*\frac{4}{7}\\\\x=\frac{28*4}{7}=\frac{4*7*4}{7}=\frac{16}{1}\\\\\\x=16[/tex]
Answer Link

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