Skip to main content
Contents Index
Search Book
Search Results:
No results.
Calculator
Read aloud
Readability settings Prev Up Next
\(\require{cancel}\newcommand{\abs}[1]{\left\lvert#1\right\rvert}
\newcommand{\point}[2]{\left(#1,#2\right)}
\newcommand{\highlight}[1]{\mathchoice{\colorbox{lightsapphire}{$\displaystyle #1$}}{\colorbox{lightsapphire}{$\textstyle #1$}}{\colorbox{lightsapphire}{$\scriptstyle #1$}}{\colorbox{lightsapphire}{$\scriptscriptstyle #1$}}}
\newcommand{\firsthighlight}[1]{\mathchoice{\colorbox{lightsapphire}{$\displaystyle #1$}}{\colorbox{lightsapphire}{$\textstyle #1$}}{\colorbox{lightsapphire}{$\scriptstyle #1$}}{\colorbox{lightsapphire}{$\scriptscriptstyle #1$}}}
\newcommand{\secondhighlight}[1]{\mathchoice{\colorbox{lightemerald}{$\displaystyle #1$}}{\colorbox{lightemerald}{$\textstyle #1$}}{\colorbox{lightemerald}{$\scriptstyle #1$}}{\colorbox{lightemerald}{$\scriptscriptstyle #1$}}}
\newcommand{\unhighlight}[1]{{\color{black}{{#1}}}}
\newcommand{\lowlight}[1]{{\color{lightgray}{#1}}}
\newcommand{\attention}[1]{\mathord{\overset{\downarrow}{#1}}}
\newcommand{\nextoperation}[1]{\mathord{\boxed{#1}}}
\newcommand{\substitute}[1]{{\color{blue}{{#1}}}}
\newcommand{\pinover}[2]{\overset{\overset{\mathrm{\ #2\ }}{|}}{\strut #1 \strut}}
\newcommand{\addright}[1]{{\highlight{{{}+#1}}}}
\newcommand{\addleft}[1]{{\highlight{{#1+{}}}}}
\newcommand{\subtractright}[1]{{\highlight{{{}-#1}}}}
\newcommand{\multiplyright}[2][\cdot]{{\highlight{{{}#1#2}}}}
\newcommand{\multiplyleft}[2][\cdot]{{\highlight{{#2#1{}}}}}
\newcommand{\divideunder}[2]{\frac{#1}{{\highlight{{#2}}}}}
\newcommand{\divideright}[1]{{\highlight{{{}\div#1}}}}
\newcommand{\negate}[1]{{\highlight{{-}}}\left(#1\right)}
\newcommand{\cancelhighlight}[1]{{\color{sapphire}{{\cancel{#1}}}}}
\newcommand{\secondcancelhighlight}[1]{{\color{emerald}{{\bcancel{#1}}}}}
\newcommand{\thirdcancelhighlight}[1]{\definecolor{amethyst}{RGB}{112,72,91}{\color{amethyst}{{\xcancel{#1}}}}}
\newcommand{\confirm}[1]{\stackrel{\checkmark}{#1}}
\newcommand{\reject}[1]{\stackrel{\text{no}}{#1}}
\newcommand{\wonder}[1]{\stackrel{\text{?}}{#1}}
\newcommand{\apple}{\text{🍎}}
\newcommand{\banana}{\text{🍌}}
\newcommand{\pear}{\text{🍐}}
\newcommand{\cat}{\text{🐱}}
\newcommand{\dog}{\text{🐶}}
\newcommand{\lt}{<}
\newcommand{\gt}{>}
\newcommand{\amp}{&}
\definecolor{fillinmathshade}{gray}{0.9}
\newcommand{\fillinmath}[1]{\mathchoice{\colorbox{fillinmathshade}{$\displaystyle \phantom{\,#1\,}$}}{\colorbox{fillinmathshade}{$\textstyle \phantom{\,#1\,}$}}{\colorbox{fillinmathshade}{$\scriptstyle \phantom{\,#1\,}$}}{\colorbox{fillinmathshade}{$\scriptscriptstyle\phantom{\,#1\,}$}}}
\newcommand{\sfrac}[2]{{#1}/{#2}}
\)
Introduction
Algebra helps people solve mathematical problems that are too complicated to solve in your head. This book covers basic ideas and skills that people use to be successful with algebra. The first things to learn about are variables, algebraic expressions, equations, and inequalities.