Solving Multiple step equations

Find the error in this students work

• They should have divided by 1 in the last step

• There is NO ERROR, their work is correct

• They should have added 19 to both sides for the last step, instead of subtracting 19

• They should have subtracted 3k to both sides for the first step, instead of adding 3k

• k=2

• k=-2

• k=4

• k=-4

• add 4 to both sides

• distribute 4 to x and -5

• Combine like terms by adding the 2x to the x

• distribute -4 to x and -5

Tags

CCSS.8.EE.C.7B

The goal of solving a one, two or multiple step equation is to ...

• be confused

• find the constant

• find the coefficient

• find a value for the variable

Tags

CCSS.7.EE.B.4A

• add 3 to both sides

• get the variable on one side by adding 2x to both sides

• subtract 11 from both sides

• get the variable on one side by subtracting 2x to both sides

• y=8

• y=4

• y=2

• y=-2

• y=0

• y=-3

• y=3

• y=-18

Tags

CCSS.7.EE.B.4A

• x=2

• x=7/4

• x=4/7

• x=1/2

Tags

CCSS.7.EE.B.4A

• w=5

• w=2

• w=-2

• w=-5

• x=5

• x=3

• x=12

• x=1.2