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OpenStudy (anonymous):
@calculusxy
OpenStudy (anonymous):
do you not know how to use a calculator?
OpenStudy (anonymous):
I guess I'm dumb
OpenStudy (anonymous):
12/18 = x/27 (cross multiply)
324 = 18x
x=18
OpenStudy (anonymous):
hold on don't tell me
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OpenStudy (anonymous):
well were all dumb when it comes down to something
OpenStudy (anonymous):
ok, I still don't get it
OpenStudy (anonymous):
I tried to reduce the 1st fraction but I don't know, I just can't think of what it could be.
OpenStudy (anonymous):
oh I think it's 18
OpenStudy (anonymous):
12/18 = x/27 so we are finding x
12/18 x 27 = x
324/18 = x
18=x
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OpenStudy (anonymous):
I took 12/18 divided them by two on both sides got 6/9 times 3 on both sides and got 18/27, so I believe 12/18 equals 18/27 right?
OpenStudy (anonymous):
let x is over 27 hence
\[\huge \frac{12}{18} = \frac{x}{27} \]
let use cross multiplication to solve it
\[12 \times 27 = 18 \times x \rightarrow \huge x = \frac{12 \times 27}{18} \]
\[\huge x = \frac{2 \times 27}{3} = \frac{2 \times 9}{1} = 18\]
so 18 is over 27
OpenStudy (anonymous):
yay! I knew it, so I'm not so dumb after all.. lol