Solving Equations and Inequalities

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 w:
-6w + 1 = -11

• 2
• 1.2
• 12
• -2

Tags

CCSS.7.EE.B.4A

Solve:
7x - 3x - 8 = 24

• 8
• -8
• 3.2
• 4

Tags

CCSS.8.EE.C.7B

Solve:
3(x - 2) = 18

• 6.7
• 4
• 8
• -4

Tags

CCSS.7.EE.B.4A

Solve.  -2n - 4 = 32

• 18
• 0
• 16
• -18

Tags

CCSS.7.EE.B.4A

k/5=4

• 1.25
• 9
• 1
• 20

Tags

CCSS.6.EE.B.7

2x - 3 + 4x = 27

• 12
• 4
• 5
• 15

Tags

CCSS.8.EE.C.7B

3/8 d = 1/4

• 2/3
• - 2/3
• 1/3
• -1/3

Tags

CCSS.6.EE.B.7

Find the Error
What error did the student make when solving the equation:
5x + 6 =  66
5x - 6 = 66 -6
5x = 60
5*5x= 60*5
x = 300

• The student subtracted 6 from both sides instead of adding
• Student multiplied by 5 instead of dividing by 5
• Student got the wrong answer when subtracting 66-6
• The student did not correctly eliminate the variable from one side of the equation

Tags

CCSS.HSA.REI.A.1

The steps in solving
4b + 4 = 24 are: 

• Add 4 to both sides then divide both sides by 4
• Add 4 to both sides then multiply both sides by 4
• Subtract 4 from both sides then multiply both sides by 4
• Subtract 4 from both sides then divide both sides by 4

Tags

CCSS.HSA.REI.A.1