Thread: Simultaneous equation 2 unknown vairables

Hi i have the following problem..


0.00243 = 200/E - V/E (100)

0.00057 = 100/E - V/E(200)


I have been asked calc E & V from the equations.. I've tried sbstitution to solve it but I cannot seem to isolate any 1 of the vairables

Please help

Bailey

Originally Posted by Bailey

Hi i have the following problem..


0.00243 = 200/E - V/E (100)

0.00057 = 100/E - V/E(200)


I have been asked calc E & V from the equations.. I've tried sbstitution to solve it but I cannot seem to isolate any 1 of the vairables

Please help

Bailey

the first the you want to do is simplify. we'll just work on the first equation. you have
that can be simplified to
multiply both sides by E and you should be able to figure it from there! post if you need more help

Originally Posted by Bailey

Hi i have the following problem..


0.00243 = 200/E - V/E (100)

0.00057 = 100/E - V/E(200)


I have been asked calc E & V from the equations.. I've tried sbstitution to solve it but I cannot seem to isolate any 1 of the vairables

Please help

Bailey

Substitution isn't the onl y way to solve simultaneous equations there is elimintaion for example :

3x + 4y = 1
6x - 2y = 5

you can solve this by multiplying the 1st equation by 2 and then subtract the 1st equation with the 2nd


6x + 8y = 2
-( 6x - 2y = 5)
0x + 10y = -3
y = -3/10 ...
try this method for you question...