Solving Linear Equations and Errors

What is the first step in solving this equation:
5x + 7 = 12

• Divide by 5
• Subtract 5
• Multiply by 7
• Subtract 7

Tags

CCSS.7.EE.B.4A

Solve for x:
8x - 10 = -34

• 4
• 3
• -3
• -24

Tags

CCSS.7.EE.B.4A

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

The steps in solving 5b - 6 = 24 are: 

• Add 6 to both sides and divide both sides by 5
• Add 6 to both sides and multiply both sides by 5
• Subtract 6 from both sides then multiply both sides by 5
• Subtract 6 from both sides then divide both sides by 5

Tags

CCSS.7.EE.B.4A

Solve.   n - (-2) = -14

• -16
• 16
• 12
• -12

Tags

CCSS.6.EE.B.7

x + 2/3 = 8/9

• x = 1/3

• x = 2/9

• x = 14/9

• x = 5/18

Tags

CCSS.6.EE.B.7

r/1.5 = 2.4

• y = 3.6

• y = 2.4

• y = 3.9

• y = 1.6

Tags

CCSS.6.EE.B.7

Solve for d:
-7(6 + d) = 49

• 13
• 1
• -1
• -13

Tags

CCSS.7.EE.B.4A

Solve   -3x + 5 = -16

• 9
• 8
• -7
• 7

Tags

CCSS.7.EE.B.4A

Solve  9 + 3x = 10

• 2/3
• 1/3
• -1/3
• 4

Tags

CCSS.7.EE.B.4A