Mathematics
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OpenStudy (anonymous):
what is the solution of the problem x-2/4=x+10/10
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OpenStudy (anonymous):
\[\frac{ x-2 }{ 4 }= \frac{ x+10 }{ 10 }\]
OpenStudy (anonymous):
this is how the problem looks
OpenStudy (anonymous):
multiply both sides by 10 and multiply both sides by 4
OpenStudy (acxbox22):
cross multiply and solve the equation
OpenStudy (acxbox22):
\[4(x+10)=10(x-2)\]
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OpenStudy (anonymous):
4x+40=10x-20
6x=60
x=10
OpenStudy (anonymous):
thank you :)
OpenStudy (anonymous):
your welcome:)
OpenStudy (anonymous):
i need help on another question
too i can't cross multiply
OpenStudy (anonymous):
\[\frac{ 8 }{ x+2 }= \frac{ 3 }{ x-1 }\]
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OpenStudy (acxbox22):
csscgirl, refrain from giving away answers but guiding them through it.
OpenStudy (anonymous):
wait can i cross multiply in this one?
OpenStudy (acxbox22):
yes
OpenStudy (anonymous):
so it will be 8(x-1)=3(x+2)
OpenStudy (acxbox22):
correct
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OpenStudy (anonymous):
i'm getting 5x=7 so far
i'm i correct?
OpenStudy (anonymous):
which will result in x=1.4
OpenStudy (acxbox22):
no, you will get 5x=14
OpenStudy (anonymous):
but you divide 7/5
which results in 1.4
which is one of the options for my hw
OpenStudy (acxbox22):
from my answer i got 2.8 and it works in your equation
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OpenStudy (anonymous):
oh how did you get 14?
OpenStudy (acxbox22):
8(x-1)=3(x+2)
8x-8=3x+6
8x=3x+14
5x=14
OpenStudy (anonymous):
ok i see what i did wrong, i didnt multiply 8 by 1 i just left it as 1.
OpenStudy (acxbox22):
cool
OpenStudy (anonymous):
thank you @acxbox22
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OpenStudy (acxbox22):
np