Logarithms

Hong Kong

Stage 4 - Stage 5

Solve $3\log x=\log125$3`l``o``g``x`=`l``o``g`125.

Easy

Less than a minute

Solve $\log_{10}x+\log_{10}6=\log_{10}48$`l``o``g`10`x`+`l``o``g`106=`l``o``g`1048 for $x$`x`.

Solve $\log_72x+\log_73=3$`l``o``g`72`x`+`l``o``g`73=3 for $x$`x`.

Solve $\log_{10}x-\log_{10}38=\log_{10}37$`l``o``g`10`x`−`l``o``g`1038=`l``o``g`1037 for $x$`x`.

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