geor5geyvipgl geor5geyvipgl
  • 01-12-2016
  • Mathematics
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What is the product of 1.5 and 2.8 is 4.2?

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cecemeanasf
cecemeanasf cecemeanasf
  • 01-12-2016
2.8 x +1.5 = 4.2 (x – 10) 
2.8 x + 1.5 = 4.2 (x – 10) 
28 x/10 + 15/10 = 42/10 (x – 10) 
28 x + 15 = 42 (x – 10) 
28 x + 15 = 42x – 420 
14 x – 405 = 0 
x = 31.07
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