Algebra

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Solving a System of Equations: Substitution and Elimination
Solving a System of Equations: Substitution and Elimination 794 629 Teaching Staff

When dealing with a system of linear equations there are two methods to algebraically solve the question. One is substitution and the other is elimination which is meant to be…

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Multiplying and Dividing Decimals
Multiplying and Dividing Decimals 750 325 Teaching Staff

Multiplying and dividing is a very important and fundamental math skill that every student should have down. However, problems that many encounter in real and not all questions that are…

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Finding the Equation of a y = mx + b Line
Finding the Equation of a y = mx + b Line 960 490 Teaching Staff

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Fractions: Adding, Subtracting, Multiplying, and Dividing
Fractions: Adding, Subtracting, Multiplying, and Dividing 360 236 Teaching Staff

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Math Review of Adding Rational Expressions with Unlike Denominators
Math Review of Adding Rational Expressions with Unlike Denominators 150 150 Deborah

Overview Adding rational expressions with unlike denominators is similar to adding fractions with unlike denominators.  The first step is to find the least common multiple (LCM) of the denominators.  This…

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Math Review of Adding Rational Expressions with Like Denominators
Math Review of Adding Rational Expressions with Like Denominators 150 150 Deborah

Overview Adding and subtracting rational expressions with like denominators is similar to adding and subtracting fractions with like denominators.  It is a three-step process: first add the numerators, then simplify…

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Math Review of Multiplying and Dividing Rational Expressions
Math Review of Multiplying and Dividing Rational Expressions 150 150 Deborah

Overview The process of multiplying and dividing rational expressions is similar to multiplying and dividing rational numbers.  In order to multiply, first multiply the numerators, then the denominators, and then…

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Math Review of Simplifying Rational Expressions
Math Review of Simplifying Rational Expressions 150 150 Deborah

Overview A rational expression has one polynomial in the numerator and one polynomial in the denominator, which means that the numerator is divided by the denominator.  However, the denominator cannot…

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Math Review of Graphing Compound Inequalities
Math Review of Graphing Compound Inequalities 358 120 Deborah

Overview Inequalities can be graphed along the number line by solving the inequality and then graphing it.  Conjunctions are true when both statements of an inequality are true.  Disjunctions are…

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Math Review of Digit and Coin Problems
Math Review of Digit and Coin Problems 240 180 Deborah

Overview Some very common word problems are problems involving digits and problems involving coins.  Like motion problems, these word problems can also be solved using equations in two variables. Setting…

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