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Chapter 3: Q12. (page 142)

Solve system of equations.

12.

2x鈭�y=23z=214x+z=19

Short Answer

Expert verified

The solution is x=3,y=4,z=7.

Step by step solution

01

Step-1 –Evaluating the value of z  from the second equation

Given system of equations are

2x鈭�y+z=23z=214x+z=19

From second equation we get

3z=21z=213z=7

02

Step-2 –Evaluating the value of x from the third equation 

4x+z=194x+7=194x=19鈭�74x=12x=3

03

Step-3–Evaluating the value of y from the first equation

2x鈭�y=22(3)鈭�y=26鈭�y=2鈭�y=2鈭�6鈭�y=鈭�4y=4

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Most popular questions from this chapter

Four lines on a plane intersect in one point, forming 8 equal angles that are non-overlapping. What is the measure, in degrees, of one of these angles ?

Solve each system of equations by graphing

4x鈭�2y=226x+9y=鈭�3

12: Solve each system of inequalities by graphing.

3x+y<-52x-4y鈮�6

Using your own words, list the steps in the general

strategy for solving linear equations.

Graph each system of equations and describe it as consistent and independent, consistent and dependent, or inconsistent.

2y鈭�4x=343x鈭�y=鈭�2
See all solutions

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