if the equation is d/0.2 = 3d+2.1 what number does d represent? Please Help!!!

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09-05-2016
Mathematics

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if the equation is d/0.2 = 3d+2.1 what number does d represent? Please Help!!!

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AL2006 AL2006 · Answer 1 · 2016-05-09T00:16:48+02:00

Here's how to find out:

Take the equation: d/0.2 = 3d + 2.1

Multiply each side by 0.2 :    d = 0.6d + 0.42

Subtract 0.6d from each side:    0.4d   =   0.42

Divide each side by 0.4 :     d =   1.05
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This answer has been changed.
I got d = -0.75 the first time.
Then I came back and changed it.
It's correct now. d = 1.05