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yikes!! thats scary :)
0.3x-0.2y=4 0.5x+0.3y=71/23 so, first you have to get rid of the y from both equations
right! i'm clueless, the fraction throws me off!
It is simple: multiply both equations, so that the y members of both of them are eliminated when added so in your case, we can multiply the first equation by 3, to get 0.9x-0.6y=12 and now we need to multiply the second equation in such a way that when coresponding members of both of them are added, y is eliminated (equals zero) so, we have to multiply it by 2 to get 1x+0.6y=142/23
now, we have to add all coresponding members to eliminate y, so 0.9x-0.6y=12 + 1x+0.6y=142/23 _________________________ 1.9x+0=418/23 =1.9x=418/23
ok, i follow you so far ....
so, now lets solve for x 1.9x=418/23 23*1.9x=418 43.7x=418 x=418/43.7 x=9.56521
i have to solve it as a fraction, so i'm plugging in 418/43.7 to solve for y ....
now to get y we just take any equation, and substitute x into it, and solve for y 0.3x-0.2y=4 0.3*9.56521-0.2y=4 2.869565217-0.2y=4 -0.2y=4-2.869565217 -0.2y=1.130434 y=1.130434/-0.2 y=-5.65
if I helped in anyway, I would apreciate if you would fan me (reload this page, and click a blue Become a fan button near my name)
yes, thats correct
what is y as a fraction?
that is y as a decimal
my answer has to be in the form of a fraction
to get it as a fraction, just do same steps as I showed you, just keep pluging in fractions all the way from the beginning until now, and you can get a fraction
ok, thx! and i became a fan while you were working on my problem, thx!
Got the fraction?
You are welcome, and look at the plot that will help you understand
If you any more problems, you can send it my way, I will be happy to answer
great, thx for your help!