Question

Kendra was given this system of equations. Negative 3 x + 7 y = negative 15. Negative 2 x minus 7 y = 5. Kendra’s work is shown in the table. Where, if anywhere, did Kendra first make a mistake? Steps Kendra’s Work Step 1 Negative 3 x + 7 y = negative 15. Negative 2 x minus 7 y = 5. Negative 5 x = negative 10. Step 2 Negative 5 x = negative 10. x = 2. Step 3 Negative 3 (2) + 7 y = negative 15. Negative 6 + 7 y = negative 15. 7 y = negative 9. y = Negative StartFraction 9 Over 7 EndFraction = negative 1 and StartFraction 2 Over 7 EndFraction step 1 step 2 step 3 no mistake

Answer 1

Given:

Kendra was given this system of equations.

-3x+7y=-15 and -2x-7y=5.

TO FIND :

The steps in Kendra’s work where did she make a mistake.

SOLUTION :

Kendra's work :

Step 1 :

Given equations are  

-3x+7y=-15

and

-2x-7y=-15

Step 2:

Adding the equations (1) and (2) we get

-5 x = -10.

x=-10/-5

x = 2.

Step 3:

Substitute the value of x in the equation (1) we have,

-3(2)+7y=-15

-6+7y=-15

7y=-15+6

7y=-9

y=-9/7

y=-1 2/7

From Kendra's worked steps she made no mistake.

Hope this helps, if it did, please give brainliest, it will help me a lot :)

Have a good day :)

Answer 2

Answer:

i dont think Kendra made a mistake

Step-by-step explanation: