Answers

2016-06-27T18:26:20+08:00
The answer is 87 I use the MDAS ( multiplication,division,addition,subdraction)
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2016-06-27T18:28:43+08:00
D=9 ( let D be 9)

D x 9 - 9                                  9 x 9=81 - 9=72

D + 7 is 9+ 7= 16

1. 72
2. 16

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If its all one question and the / means divided by this is the solution
D=9 so use MDAS by starting with multiplication and divison so D x 9 - D/D + 7 after doing MDAS it should be something like this 81 - 1 + 7 so simply answe that the answer is 87 : )