jaygar544 jaygar544
  • 25-09-2017
  • Mathematics
contestada

Examine the work shown. Explain the error and find the correct result.

2(4 – 16) – (–30)
2(–12) – (–30)
24 – (–30)
54

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Аноним Аноним
  • 25-09-2017
THe error is on the third line :-    2(-12)  = -24 not 24.
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dvikhan dvikhan
  • 16-06-2018
The product of two numbers with different signs is negative, so 2(-12) = -24, not 24. Then -24 — (-30) = -24 + 30 = 6.
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