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MVCKarl · Answer 1 · 2017-08-27T10:33:34+0000

umm is D represented by a number?

if it was, you would take D=20-1.95c subtract 20 from both sides, so you can isolate your variable, c

then divide both sides by -1.95 and you get

( D - 20 ) ÷ -1.95 = c

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