nessa05 nessa05

06-12-2017
Mathematics

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2(5-d)=2-4d solve for d

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wuzzleluver wuzzleluver

06-12-2017

2(5-d)=2-4d
(2*5)+ ( 2* -d) = 2-4d (distribute the 2 into the parentheses)
10+ -2d= 2-4d ( add 4d to both sides)
10 + 2d= 2 (subtract 10 from both sides)
2d= -8 ( divide both sides by 2)
d= -4

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