Solving Word Problems Using Systems Of Linear Equations

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Knowing how to solve systems of equations is necessary to solve these types of problems.

Other types of word problems involving systems of equations include mixture problems, money word problems, work word problems and rate word problems.

Likewise, accountants use algebraic formulas to calculate the monthly loan payments for a loan of any size under any interest rate.

In this course, you will learn how to work with formulas that are already known from science or business to calculate a given quantity, and you will also learn how to set up your own formulas to describe various situations by translating verbal descriptions to mathematical language.

As a reminder, a is just an algebraic expression that represents a line.

These equations typically have one variable and look like 3x = 9 or y 4 = 10.

This introductory mathematics course is for you if you have a solid foundation in arithmetic (that is, you know how to perform operations with real numbers, including negative numbers, fractions, and decimals).

Numbers and basic arithmetic are used often in everyday life in both simple situations, like estimating how much change you will get when making a purchase in a store, as well as in more complicated ones, like figuring out how much time it would take to pay off a loan under interest.

In the later units of this course, you will discover another tool used in mathematics to describe numbers and analyze relationships: graphing.

You will learn that any pair of numbers can be represented by a point on a coordinate plane and that a relationship between two quantities can be represented by a line or a curve.

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