# Beginner- align equations to the left

I am total beginner, and I read all questions and response on this site, but still can not figure it out. I tried align* and flalign, but always is some error. Hope you can help.

\documentclass[10pt]{article}
\usepackage[top=1in, bottom=1in]{geometry}
\usepackage{amsfonts}
\usepackage{graphicx}
\usepackage{amsmath}
\usepackage[T1]{fontenc}

.........

\textbf{2.}Use the properties of logarithms:
$$\log_2(x^4\sqrt{\frac{x}{z^3}})$$ $$\ln(\frac{7x^3\sqrt{x+1}}{5})$$
$$\log_8(x-1)=\log_8(x-2)-\log_8(x+2)$$
$$5\ln(x-2)-\ln(x+2)-3\ln(x)$$

• Do you want all equations to begin at the left margin? – Bernard Mar 22 at 16:37
• yes, left margin – MaYa Mar 23 at 2:15
• please read a proper introduction to LaTeX. You will have more worries later if you continue the way you are going now. – Johannes_B Mar 23 at 6:18
• Sure. Thanks again! – MaYa Mar 23 at 6:19

Like this?

\documentclass[10pt,fleqn]{article}
\usepackage[top=1in, bottom=1in]{geometry}

\begin{document}
Something
$\log_2\left(x^4\sqrt{\frac{x}{z^3}}\right)$
$\ln\left(\frac{7x^3\sqrt{x+1}}{5}\right)$
$\log_8(x-1)=\log_8(x-2)-\log_8(x+2)$
$5\ln(x-2)-\ln(x+2)-3\ln(x)$
\end{document}

% Option fleqn' align all display-style equations
% to the left margin, but you have to use LaTeX
% command  instead of plain TeX command 


or this?

\documentclass[10pt]{article}
\usepackage[top=1in, bottom=1in]{geometry}
\usepackage{amsmath}

\begin{document}
Something

\begin{align*}
&\log_2\left(x^4\sqrt{\frac{x}{z^3}}\right)\\
&\ln\left(\frac{7x^3\sqrt{x+1}}{5}\right)\\
&\log_8(x-1)=\log_8(x-2)-\log_8(x+2)\\
&5\ln(x-2)-\ln(x+2)-3\ln(x)
\end{align*}
\end{document}

% The align' environment (provided by amsmath')
% can align all lines in the equation but still
% make the equation centered. You have to add a &
% to make the lines left-aligned. Read more in
% LaTeX introductory documents.
%
% align*' is align' but the lines are not numbered
`