Solution 3.3:4b

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The two terms can be combined into one logarithmic expression using the log law
The two terms can be combined into one logarithmic expression using the log law
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<math>\lg a+\lg b=\lg \left( ab \right)</math>.
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<math>\lg a + \lg b = \lg (ab)</math>,
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{{Displayed math||<math>\lg 23 + \lg\frac{1}{23} = \lg \Bigl(23\cdot\frac{1}{23}\Bigr) = \lg 1 = 0\,\textrm{.}</math>}}
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<math>\lg 23+\lg \frac{1}{23}=\lg 23\centerdot \frac{1}{23}=\lg 1=0</math>
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Current revision

The two terms can be combined into one logarithmic expression using the log law \displaystyle \lg a + \lg b = \lg (ab),

\displaystyle \lg 23 + \lg\frac{1}{23} = \lg \Bigl(23\cdot\frac{1}{23}\Bigr) = \lg 1 = 0\,\textrm{.}
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