Answered

IDNLearn.com offers a comprehensive platform for finding and sharing knowledge. Discover prompt and accurate answers from our community of experienced professionals.

Angie was given the system of equations. Angie’s work is shown in the table.
7x+y=−12
7x+4y=−6
Where did Angie make an error? Justify your answer.


Step 1; because she should have multiplied the second equation by -1.


Step 2; because she should have eliminated the y-value.


Step 3; because she used substitution incorrectly.


Step 4; because the solution is (2,-26).

Angie Was Given The System Of Equations Angies Work Is Shown In The Table 7xy12 7x4y6 Where Did Angie Make An Error Justify Your Answer Step 1 Because She Shoul class=

Sagot :

Angie made an error because she used substitution incorrectly in step 3.

System of equation

7x + y =−12

7x + 4y = −6

subtract equation(i) from (ii) to eliminate x

Therefore,

3y = 6

y = 6 / 3

y = 2

Therefore,

7x + 2 = -12

subtract 2 from both sides of the equation

7x = -12 - 2

7x = - 14

x = - 14 / 7

x = -2

(-2, 2)

Therefore, Angie use substitution incorrectly in step 3.

learn more on system of equation here: https://brainly.com/question/1818941