(a) A formula expresses a rule in algebraic terms. For example, A = / x w where A = area, / = length and w = width. (b) To use algebraic equations to solve word problems Step 1 Represent the unknown variable by a letter, such as x. Step 2anbsp;...

Title | : | Math Insights Tb S1a S/e |

Author | : | Yet Sum Yang |

Publisher | : | Pearson Education South Asia - 2007 |

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