Error in Solving Equations

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the first step of doing the distributive property.

• The mistake was made on the second step of moving the variable.

Tags

CCSS.8.EE.C.7A

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the distributive property steps.

• The mistake was made on combining like terms on the left side.

• The mistake was made on moving the variable to the right side.

• The mistake was made on moving the constant to the left side.

Tags

CCSS.HSA.REI.A.1

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the distributive property step on the right side.

• The mistake was made on combining like terms on the left side.

• The mistake was made on moving the variable to the left side.

• The mistake was made on moving the constant to the right side.

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the first step of moving the variable to the right side.

• The mistake was made on the second step of moving the constant to the left side.

• The mistake was made on the last step when isolating the variable by removing the coefficient

Tags

CCSS.HSA.REI.A.1

Find the Error
What error did the student make when solving the equation:
1/5x + 6 = 3/5x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2

• The student found an incorrect common denominator

• The student did not multiply all terms by the common denominator

• The student did not use opposite operations appropriately

• The student did not correctly eliminate the variable from one side of the equation

Which step contains an error?

• Step 1

• Step 2

• Step 3

• Step 4

• No Error

In what line is the mistake?

• (Distributing)

• (combining Like terms)

• (Subtracting X)

• (Adding 8)

• (Dividing to get x-alone)

Tags

CCSS.HSA.REI.A.1

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the first step of combining like terms on the left side.

• The mistake was made on the second step of moving the variable to the left side.

• The mistake was made on the third step of moving the constant to the right side.

• The mistake was made on the last step when isolating the variable by removing the coefficient

Tags

CCSS.HSA.REI.A.1

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the second step of combining like terms on the left side.

• The mistake was made on the third step of moving the variable to the right side.

• The mistake was made on the fourth step of moving the constant to the left side.

• The mistake was made on the first step doing the distributive property.

Is there a mistake on the equation solved? If so where was the mistake made?

• This equation is solved correctly.

• The mistake was made on the second step of combining like terms on the right side.

• The mistake was made on the third step of moving the variable to the left side.

• The mistake was made on the fourth step of moving the constant to the right side.

• The mistake was made on the first step doing the distributive property.