# Solving Linear equations

• Apr 4th 2008, 07:34 PM
Davidxes
Solving Linear equations
5 - (2 over 7)d = 3
• Apr 4th 2008, 07:45 PM
Mathstud28
O 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 PM
Davidxes
;o wait up
it was like dis :o
2
- d
7
• Apr 4th 2008, 07:56 PM
Mathstud28
OK 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 PM
Davidxes
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 ?

2
- D
7
• Apr 4th 2008, 08:00 PM
Davidxes
yes 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