5 - (2 over 7)d = 3

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- Apr 4th 2008, 07:34 PMDavidxesSolving Linear equations
5 - (2 over 7)d = 3

- Apr 4th 2008, 07:45 PMMathstud28O god here we go again lol
$\displaystyle 5-\frac{2}{7d}=3$....subtracting 5 from both sides you get[tex]\frac{-2}{7d}=-2[/MATh]...now by divding by a negative you get[tex]\frac{2}{7d}=2[/MATh] multiplying by 7d you get $\displaystyle 2=14d$...and then by dividing by 14 you get $\displaystyle d=1/7$

- Apr 4th 2008, 07:49 PMDavidxes;o wait up
it was like dis :o

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7 - Apr 4th 2008, 07:56 PMMathstud28OK then
ok follow my work until we get to the$\displaystyle \frac{2}{7d}=2$...and rewrite it as$\displaystyle \frac{2d}{7}=2$ now multiply both sides by $\displaystyle \frac{7}{2}$ to get $\displaystyle d=7$

- Apr 4th 2008, 07:58 PMDavidxesnooo pls pls re reply
it says the answer is 7

at the back of the boook

its not 7d : o

its

2 over 7 2 over 7 are d know wat i mean ?

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7 - Apr 4th 2008, 08:00 PMDavidxesyes yes yes
" ok follow my work until we get to the...and rewrite it as now multiply both sides by to get "

it works thnx : o