SOLUTION: how would you do this please show me {4a+2u+i=2 {5a+3u+2i=17 { a-5u =3

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Question 17296: how would you do this please show me {4a+2u+i=2
{5a+3u+2i=17
{ a-5u =3
Answer by kapilsinghi(68) About Me  (Show Source):
You can put this solution on YOUR website!
4a+2u+i =2 ------------1
5a+3u+2i=17 -----------2
a-5u =3 ------------3
Adding 1,2 and 3
10a + 3i = 22
10a = 22 -3i
a = 22/10 - 3i/10
according to equation 3
a-5u =3
(22-3i)/10 - 5u = 3
22-3i - 50u = 30
50u = -8 -3i
u = (-8 -3i)/50

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