dolly0114
Can anybody help me?



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dolly0114
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dw:1355778037905:dw

frx
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Start by multiplying both side by (a+7)

dolly0114
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and then what?

frx
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\[\frac{ a3 }{a+7 }=\frac{ 3 }{ 8 }\]
\[(a+7)\frac{ a3 }{a+7 }=\frac{ 3 }{ 8 }(a+7)\]
\[a3= \frac{ 3(a+7) }{ 8}\]
\[8(a3)=3(a+7)\]

frx
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\[8a24=3a+21\]
\[5a=45\]

frx
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a=9

dolly0114
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Thanks a million!!!!!

frx
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No problem :)