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11 Cards in this Set
- Front
- Back
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a + b = b + a
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commutative property of addition
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a x b = b x a
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commutative property of multiplication
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equivalent expressions
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two expressions that have the same value
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equation
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two expressions with an equal sign between them
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expression
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a group of numbers and variables (x's or y's, etc.)
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equivalent equations
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Equations that look different but have the same solution.
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Golden Rule of Algebra
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If you change the value of one side of an equation, you must change the other side by the same amount
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Undoing
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Doing the opposite operation (+_ x/)to eliminate it. Technique used to reach goal of isolating x on one side of the = sign.
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inverse operations
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two operations that undo each other
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Rewriting
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when we change the form of an expression without changing its value
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Order of Operations
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P E M D A S (Parenthesess or grouping symbols including fraction bars, innermost first, then exponents or roots, then M or D (left to right), and lastly, A or S (left to right)
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