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Solve each problem by using a system of three equations inthree unknowns.

Buying texts. Melissa purchased an English text, a math text, and a chemistry text for a total of 276 .$ The English text was 20 dollars more than the math text and the chemistry text was twice the price of the math text. What was the price of each text?

$\$ 84$, $\$ 64$, $\$ 128$

Algebra

Algebra 2

Chapter 4

Systems of Linear Equations

Section 3

Systems of Linear Equations in Three Variables

Polynomials

Systems of Equations and Inequalities

Introduction to Algebra

Graph Linear Functions

Write Linear Equations

Linear Equations and Functions

Matrices and Determinants

University of California, Berkeley

University of North Carolina at Chapel Hill

University of Michigan - Ann Arbor

Lectures

09:38

In mathematics, an absolut…

01:43

In mathematics, an equatio…

01:23

Solve each problem by usin…

03:00

Write a system of two equa…

01:56

Solve each problem using t…

04:40

Use the four-step strategy…

03:16

03:31

03:14

01:36

01:50

01:13

All right. So you're gonna system equations were folded their three books in the English float Math, both chemistry book. And the total cost of these books is $276. Then we're told that the English book is $20 more than the math book. We're told the chemistry book is two times the price of the map. Now we have our system of equations, and we thought this just by reading through the problems and writing equations as we read we can solve. We see we have all the variables in terms of EMS. We consult for em, we're gonna You just 20 plus plus and plus two AM was to 76. That's gonna be four ab equals to 56. Therefore, AM is gonna be to 56 about four, which is 64 and the 64 value know that e people was 84 C equals 1 28 What hobbies into double check that makes sense. Way have 84 plus 64 plus 1 28 that equals 2 76 and the other two question pulled as well. So this is our solution, of course, in terms of dollars to make sure the dollar signs. Um, and you could write this as an order triple as well, if you want.

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