Solving Linear Equations Check up

Find the error in the problem below
19 - 2k = 3k - 1
     +3k   +3k
19 + 1k = -1
-19           -19
k = -20

• They should have divided by 1 for the last step
• They should add 19 instead of subtracting 19
• I can not find an error
• Instead of adding 3k they should subtract 3k

Tags

CCSS.HSA.REI.A.1

Solve for w:
-6w + 1 = -11

• 2
• 1.2
• 12
• -2

Tags

CCSS.7.EE.B.4A

Solve     -20 = -4x - 6x

• x = -2
• x = 10
• x = 2
• x = -10

Tags

CCSS.8.EE.C.7B

Solve for x:
8x + 2 + 3x + 5 = x + 12

• -1/2
• 2
• -2
• 1/2

Solve for x:
2(3x + 4) + 2 = 4 + 3x

• 2
• -2/3
• 10
• -2

Tags

CCSS.8.EE.C.7B

Solve:
2(2x + 3) = -6(x + 9)

• 1.2
• 6
• -6
• 7.5

Solve:
-4x = 24

• 20
• -20
• 6
• -6

Tags

CCSS.6.EE.B.7

Solve the following equation,
3x + 6 = 21

• x = 9
• x = 5
• x = 15
• x = 27

Tags

CCSS.7.EE.B.4A

Solve the following equation,
x + 7 = 28

• x = 35
• x = 4
• x = 196
• x = 21

Tags

CCSS.6.EE.B.7

Which operation will cancel out multiplication?

• A.  Addition
• B. Subtraction
• C. Multiplication
• D. Division

Tags

CCSS.HSA.REI.A.1