The logarithmic expressions by simplifying with logarithmic identities is one type of log problems in mathematics. The worksheet of practice questions on simplifying the logarithm expressions with answers is given here for students and solutions to learn how to find the values of log expressions by simplification using logarithmic rules.

$(1).\,\,$ Evaluate $\log_{5}{7^{\displaystyle -3\log_{7}{5}}}$

$(2).\,\,$ Evaluate $7\log_{2}{\bigg(\dfrac{16}{15}\bigg)}$ $+$ $5\log_{2}{\bigg(\dfrac{25}{24}\bigg)}$ $+$ $3\log_{2}{\bigg(\dfrac{81}{80}\bigg)}$

$(3).\,\,$ Evaluate $\log_{\sqrt{2}}{\sqrt{2\sqrt{2\sqrt{2\sqrt{2\sqrt{2}}}}}}$

$(1).\,\,$ Evaluate $\log{\dfrac{x^2}{yz}}$ $+$ $\log{\dfrac{y^2}{zx}}$ $+$ $\log{\dfrac{z^2}{xy}}$

$(2).\,\,$ Evaluate $\dfrac{1}{\log_{\large ab}{abc}}$ $+$ $\dfrac{1}{\log_{\large bc}{abc}}$ $+$ $\dfrac{1}{\log_{\large ca}{abc}}$

$(3).\,\,$ Evaluate $\log_{\large a}{x}$ $+$ $\log_{\large a^2}{x^2}$ $+$ $\log_{\large a^3}{x^3}$ $+$ $\cdots$ $\log_{\large a^n}{x^n}$

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