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aivan3 [116]
4 years ago
15

Help!!!!!!!!!

Mathematics
1 answer:
shusha [124]4 years ago
5 0
There are a couple of different ways you could do this.
I'm going to do it with the least number of steps.

4d - 7 = 3d  Subtract 4d from both sides.
4d - 4d - 7 = 3d - 4d
-7 = -d  Divide both sides by negative one so that the variable will become positive.
-7/-1 = -d/-1
7 = d
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