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Mathematics 10 Online
OpenStudy (anonymous):

5/6=7n+9 _____ 9

OpenStudy (anonymous):

If we have to solve it for n then first cross multiply |dw:1398118795360:dw|

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

next

OpenStudy (anonymous):

After corss multiplication we get ---- ?

OpenStudy (anonymous):

42n+54=45

OpenStudy (anonymous):

perfect .....

OpenStudy (anonymous):

Now collect like terms to one side ....

OpenStudy (anonymous):

42n=-10

OpenStudy (anonymous):

@hartnn

hartnn (hartnn):

45 -54 is actually -9 isn't it ?

OpenStudy (anonymous):

oh yeah

OpenStudy (anonymous):

so its 42n=-9

hartnn (hartnn):

yes1 now just divide both sides by 42 :)

OpenStudy (anonymous):

the answer is 0.21428571

hartnn (hartnn):

n = -9/42 = -3/14 = -0.214... :)

OpenStudy (anonymous):

that's it

hartnn (hartnn):

yes! thats it :)

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