1\documentclass{article} 2 3\usepackage{amsmath} %% pkg required by EasyLatex 4\usepackage{amsfonts} %% pkg required by EasyLatex 5\usepackage{amssymb} %% pkg required by EasyLatex 6\usepackage{psfrag} %% pkg required by EasyLatex 7\usepackage{url} %% pkg required by EasyLatex 8\usepackage[dvips]{graphicx} %% pkg required by EasyLatex 9\begin{document} 10 11 12\begin{align*} 13a &\leq b 14\\b &\leq c 15\\a &\geq d 16\\a &= e 17\end{align*} 18 19 20\begin{align*} 21b &= c 22\\b &= d 23\end{align*} 24 25 26\begin{align*} 27a &= a 28\end{align*} 29 30 31\begin{align*} 32&&c(v_a v_b \ldots v_c, v_x v_y \ldots v_z) + c(v_d v_e \ldots v_f, v_x v_y \ldots v_z) &= c(v_a v_b \ldots v_c v_d v_e \ldots v_f, v_x v_y \ldots v_z) 33\\ \textrm{if $m \geq n$, } && c(v_1 v_2 \ldots v_{n-1} v_n) &\geq c(v_1 v_2 \ldots v_{n-1} v_m) 34\\&& c(v_a v_b \ldots v_c, v_x v_y \ldots v_z) + c(v_d v_e \ldots v_f, v_q v_r \ldots v_s) &\geq c(v_a v_b \ldots v_c, v_x v_y \ldots v_z) 35\end{align*} 36 37 38 39\begin{align*} 40&&a + b &= c 41\\ \textrm{if $m \geq n$, } && d &\geq e 42\\&& f &\geq g 43\end{align*} 44 45 46 47 48\end{document} 49