3 EACH STUDENT BELOW MADE AN ERROR IN THEIR WORK WHEN SOLVING THEIR

EQUATION. USE THE TYPING TOOL TO ANSWER THE QUESTIONS IN EACH WHITE BOX.

CULLEN

SERAPHINA

JASPER

-6n + 22 = -4n + 14

- 10n + 22 - 14

-10n = -8

8.4y - 6.8 - -3.2y + 16.4

11.6y - 6.8 - 16.4

11.6y = 23.2

y = 11.6

26 - 32 - - +32

26 - 32 = 32

n - 0.8

b-8

VARIABLES ON BOTH SIDES

DESCRIBE CULLEN'S MISTAKE

DESCRIBE SERAPHINA'S MISTAKE:

DESCRIBE JASPER'S MISTAKE:

WHAT IS THE CORRECT SOLUTION?

WHAT IS THE CORRECT SOLUTION?

WHAT IS THE CORRECT SOLUTION?

More the detto, 2019

1) -6·n - (-4·n) = -10·n (The double negative should change to positive  + sign here)

-6·n - (-4·n) = -6·n + 4·n = -2·n

The correct solution is;

n = 4

2)  y = 23.2 - 11.6 = 11.6, y = 11.6 (Seraphina's mistake is that subtraction was done rather than the division as shown here)

The correct solution is;

y = 2

Step-by-step explanation:

The given parameters are

-6·n + 22 = -4·n + 14

22 -  14= 6·n - 4·n = 2·n

8 = 2·n

n = 8/2 = 4

Cullen's mistake is as follows;

-6·n + 22 = -4·n + 14

-6·n - (-4·n)   =  -22 + 14

-6·n + 4·n   =  -22 + 14 (The double negative should change to positive  + sign here)

-2·n   =  -8

n = -8/(-2) = 4

n = 4

2) 8.4·y - 6.8 = -3.2·y + 16.4

8.4·y - (-3.2·y) = -(- 6.8) + 16.4

11.6·y = 23.2 → y = 23.2 - 11.6 = 11.6, y = 11.6 (Seraphina's mistake is that subtraction was done rather than the division as shown here)

y = 23.2/11.6 = 2

y = 2

3) The last equation has parts missing