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Author need help! got some algebra questions etc that i need to get my head round.
rob_zetec
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Registered: 8th Sep 06
Location: wigan
User status: Offline
22nd Jul 09 at 20:59   View User's Profile U2U Member Reply With Quote

Well since i decided to join the R.A.F i have been revising for my maths, mechanics etc and i know that these are the sort of questions that i need to work out but i just cant work them out and im sure some guys and girls on here will find it quite easy to do. So if you can please explain that would be great


3(t + 35) = 35 ( there should be a line underneath the brackets )
6
(and the 6 and 5 should be underneath)
A. B. C. D. E..
35 70 75 77 30

9(t x 16) = 144
5

A. B. C. D. E.
6 3 9 15 5


it might seem simple to some people but i just cant get it at all it looks a mess there though, i hope you get what i mean.

thanks rob

[Edited on 22-07-2009 by rob_zetec]

[Edited on 22-07-2009 by rob_zetec]
Ian
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Registered: 28th Aug 99
Location: Liverpool
User status: Offline
22nd Jul 09 at 21:08   View Garage View User's Profile U2U Member Reply With Quote

(3(t+35))/6 = 35

3(t+35) = 35 x 6

3(t+35) = 210

t+35 = 210 / 3

t+35 = 70

t = 70 - 35

t = 35
Ian
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Registered: 28th Aug 99
Location: Liverpool
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22nd Jul 09 at 21:09   View Garage View User's Profile U2U Member Reply With Quote

(9(t x 16))/5 = 144

9(t x 16) = 144 x 5

9(t x 16) = 720

t x 16 = 720 / 9

t x 16 = 80

t = 80 / 16

t = 5
James
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Registered: 1st Jun 02
Location: Surrey
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22nd Jul 09 at 21:10   View User's Profile U2U Member Reply With Quote

First one:

Multiply both sides by 6 so you get 3(t + 35) = 210

Expand the brackets so you get 3t + 105 = 210

Take 105 off both sides so 3t = 105

So t = 35
Tommy L
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Registered: 21st Aug 06
Location: Northampton Drives: Audi wagon
User status: Offline
22nd Jul 09 at 21:11   View User's Profile U2U Member Reply With Quote

damn it ian, i just got my calculator out
Ojc
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Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
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22nd Jul 09 at 21:19   View User's Profile U2U Member Reply With Quote


 
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