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## sarakeranen 4 years ago I am unable to solve the two simultaneous equations: 0.991=0.0266x+0.0835y, 0.325=0.0499x+0.0077y. Could you help?

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1. 0779olive

Use the fisrt equation to find y=f(x) on replace the y's expression found in the second equation to compute x and you'll find y (I have x=0.523...)

2. satellite73

if i were doing it i would clear the decimals and write $266x+835y=9110$ $499x+77y=3250$

3. satellite73

then i would go slap the math teacher for giving me such annoying numbers to work with. then i would use some computer algebra system to solve

4. estudier

Ha ha...:-)

5. satellite73

well not that hard when you ask the machine. i got $x=\frac{ 1950680}{396183}$

6. satellite73

how much arithmetic do you wan to do for a problem like this?

7. estudier

The thought police will be after u for suggesting an assault on apoor math teacher...

8. satellite73

ok a mild slap with a kleenex. but really, who would even want to know such a thing. if this problem arose naturally from some actual data, then fine. get out the software and find your answer.

9. estudier

Either u or olive is a bit out...

10. satellite73

i used a machine. i have no stake in this game

11. estudier

I guess olive used her machine wrong, I'm not going to check it though.

12. estudier

She got the principle right, that's the main thing...

13. sarakeranen

Thanks for your help. By the way, this is chemistry...determining unknown concentrations.

14. estudier

That's a reasonable excuse, no need to slap the chem teacher, then:-)

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