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Introduction to Algebraic Expressions

0. Fundamental Concepts of Algebra

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Evaluate the algebraic expression when ﻿<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>x</mi><mo>=</mo><mn>4</mn></mrow><annotation encoding="application/x-tex">x=4</annotation></semantics></math>x=4﻿ and ﻿<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>y</mi><mo>=</mo><mo>−</mo><mn>5</mn></mrow><annotation encoding="application/x-tex">y=-5</annotation></semantics></math>y=−5﻿.﻿﻿<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mn>2</mn><mi>y</mi><mo>−</mo><mi>x</mi><mrow><mo fence="true">(</mo><mn>3</mn><mo>+</mo><mi>y</mi><mo fence="true">)</mo></mrow></mrow><annotation encoding="application/x-tex">2y-x\left(3+y\right)</annotation></semantics></math>2y−x(3+y)﻿

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