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Anonymous Anonymous
  • 19-02-2016
  • Mathematics
Answered

(d+3d) - (-d+ 2) ; d = 3

(d+3d) - (-d+ 2) ; d = 3 class=

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 19-02-2016

what they want you to do is subsitute 3 for d
write 3 for everywhere you see d and remember that 3d means 3 times d and -d means -1 times d
(d+3d)-(-d+2)

d=3
(3+3(3))-(-3+2)
(3+9)-(2-3)
(12)-(-1)
12+1
13
answer is 13

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