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  • 24-03-2017
  • Mathematics
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Can someone help me on #7

Can someone help me on 7 class=

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rainwatertheo
rainwatertheo rainwatertheo
  • 24-03-2017
4(5a-8) = 20a - 32. 20a - 32 + 2a = 22a - 32, which is not equal to 12a - 6. Mary is wrong. 
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