Mathematics
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OpenStudy (meilendurcer):
–4 1/2• –2 1/3=
A. 10 1/2
B. -10 1/2
C. -9
D. 9
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jhonyy9 (jhonyy9):
so little help ,if 2 1/3 = (3*2 +1)/3 =(6+1)/3 = 7/3
so can you calcule hence your exercise too ?
OpenStudy (meilendurcer):
i can try
jhonyy9 (jhonyy9):
ok the first i will calcule it
so -4 1/2 = -(4*2 +1)/2 = -(8+1)/2 = -9/2
jhonyy9 (jhonyy9):
can you calcule the same -2 1/3 =
OpenStudy (meilendurcer):
3?
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jhonyy9 (jhonyy9):
no the same like how i have calculet it -4 1/2
ok ?
OpenStudy (meilendurcer):
ok how do i do that?
jhonyy9 (jhonyy9):
step by step how i have doit -4 1/2
jhonyy9 (jhonyy9):
so there are
- 2 1/3 = - (2*3 +1)/3 =
jhonyy9 (jhonyy9):
courage
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jhonyy9 (jhonyy9):
2*3 =
OpenStudy (meilendurcer):
6
jhonyy9 (jhonyy9):
6+1=
OpenStudy (meilendurcer):
7
jhonyy9 (jhonyy9):
-(2*3 +1) =
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jhonyy9 (jhonyy9):
-(6+1) =
jhonyy9 (jhonyy9):
-7
jhonyy9 (jhonyy9):
so there will be -7/3
jhonyy9 (jhonyy9):
than your exercise will be after these calcules how ?
OpenStudy (meilendurcer):
ok
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jhonyy9 (jhonyy9):
can you rewrite it here now please ?
OpenStudy (meilendurcer):
yes
jhonyy9 (jhonyy9):
can i look it now here ?
OpenStudy (meilendurcer):
\[-\frac{ 7 }{ 3 } \div = 2.3 ?\]
jhonyy9 (jhonyy9):
how you have got -7/3 ?
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OpenStudy (meilendurcer):
oh ok i understand 1 sec
jhonyy9 (jhonyy9):
-9/2 * -7/3 =
jhonyy9 (jhonyy9):
so you need multiplie these fractions ?
OpenStudy (meilendurcer):
okay
jhonyy9 (jhonyy9):
so than what will be the right answer ?
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OpenStudy (meilendurcer):
10.32?
jhonyy9 (jhonyy9):
do you see this there ?
OpenStudy (meilendurcer):
no
jhonyy9 (jhonyy9):
so than how do you think ,is right ?
OpenStudy (meilendurcer):
i don't i just don't know how to do this type of math..
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jhonyy9 (jhonyy9):
how multiplie two fractions ?
jhonyy9 (jhonyy9):
a/b * c/d =
OpenStudy (meilendurcer):
yea
jhonyy9 (jhonyy9):
so
a c
--- * --- =
b d
jhonyy9 (jhonyy9):
so this is equal (a*c)/(b*d)
ok ?
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jhonyy9 (jhonyy9):
can you calcule your exercise the same ?
OpenStudy (meilendurcer):
i got it. my answer is d
jhonyy9 (jhonyy9):
so how you have got it ? not is right
can you calcule it here ?
jhonyy9 (jhonyy9):
-9/2 * -7/3 = (-9 * -7)/(2*3) =
ok ?
so than this will be equal ?
jhonyy9 (jhonyy9):
minus time minus equal
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OpenStudy (meilendurcer):
ok
jhonyy9 (jhonyy9):
courage please
jhonyy9 (jhonyy9):
so than how many will be ?
OpenStudy (meilendurcer):
378?
jhonyy9 (jhonyy9):
-9 -7
--- * ----- = ------
2 3
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OpenStudy (meilendurcer):
-27 and -14?
jhonyy9 (jhonyy9):
why ?
-9 *-7
------ =
2*3
OpenStudy (meilendurcer):
63 and 6?
jhonyy9 (jhonyy9):
yes 63/6 =
OpenStudy (meilendurcer):
10.5
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jhonyy9 (jhonyy9):
can you prove me here that a. is the right answer
jhonyy9 (jhonyy9):
???
OpenStudy (meilendurcer):
isn't 10 .5 mean 10 and 1/2?
jhonyy9 (jhonyy9):
so there is 63/6 yes ?
OpenStudy (meilendurcer):
yes
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jhonyy9 (jhonyy9):
63 divided by 6 = 10 and remainder 3/6 but you know that 3/6 equal 1/2 yes ?
so than this result 10 1/2
ok ?
OpenStudy (meilendurcer):
ok thank you
jhonyy9 (jhonyy9):
was easy ???
your welcom
good luck
bye