I need to show how I got the answer to 10L + 45S = 5.55 I figured out L = .15 and S = .09 ?

Question

Please help. I just used a calculator and kept trying until I got it to work out - but I need to actually show the Algebra work. THanks

Answer 1

Is another equation given in the problem?

If not, there are infinite solutions.

If so, then it can be solved with algebra.

Answer 2

ya me 2

Answer 3

wks1320  Hi !!

6L + 20S = 2.70 ← eq 1

4L + 25S = 2.85 ← eq 2

eq 1 multiply by 5

30L + 100S = 13.5 ← eq 4

eq 2 multiply by -4

-16L - 100S = -11.4 ← eq 5

Add algebraically eq 4 and eq 5

.30L + 100S = 13.5

-16L - 100S = -11.4

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14L + 0 ......= + 2.1

L = 2.1/14

L =  0.15

Substitute L to eq 2  --- (4L + 25S = 2.85) ← eq 2

4(2.1/14) + 25S = 2.85

0.6 + 25S = 2.85

25S = 2.85 - 0.6

25S = 2.25

S = 2.25/25

S = 0.09

Summary :

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ans:: L = 0.15  &  S = 0.09

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hope this helps