# How To Solve

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### #1 uterrorista

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Posted 21 October 2004 - 12:22 PM

how do i solve this for example:

| A=C+B
| B=F-D
{ C=D+E
| 20A+20B+4F=585
| 40C+5D-20B=0
| -5D+2E-4F=585

i've six equations and six variables.
how.
explain all details.

### #2 Overlord

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My head - C300 OS 3.00 - G100 Rom 1.02 - G65 - G60 - G25

Posted 21 October 2004 - 01:12 PM

1st manner :

solve({a=c+b,b=f-d,c=d+e,20a+20b+4f=585,40c+5d-20b=0,-5d+2e-4f=585},{a,b,c,d,e,f})
in general : solve({equa1,equa2,...,equaX},{unknown1,unk2,...,unkX})

2nd manner :
activate the 2Dsymbol keypad, click on the "{" (above tje "lim")
you have :
{ O |
{ O | O
so you can enter a 2-equa 2-unk system
just click 4 more times on the "{", you have
{ O |
{ O |
{ O |
{ O |
{ O |
{ O | O
in the left O, type the equa
in the right down O, type a,b,c,d,e,f (the unknowns)

### #3 uterrorista

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