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  • 11-03-2018
  • Mathematics
contestada

Please help with seven and eight or both

Please help with seven and eight or both class=

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Аноним Аноним
  • 11-03-2018
7a)
6 ÷ 4 = 4 ÷ 6
3/2 = 2/3 (False)

7b)
6- 4- 2 = 4 - 2 - 6
0 = -8 (False)

7c)
(6 + 7) + 8 = 6 + (7 + 8) 
13 + 8 = 6 + 15
21 = 21 (True)

7d)
(6 - 4) + 5 = (6 - 5) + 4
2 + 5 = 1 + 4
7 = 5 (False)

8)
6(x + 3y + 5)
= 6x + 19y + 30 (Answer D)

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