Equations and Inequalities

3c + 5 = 23

• c = 3
• c = 6
• c = 7
• c = 18

Tags

CCSS.7.EE.B.4A

4x + 7 = 23

• x = 16
• x = 4
• x = 9
• x = 12

Tags

CCSS.7.EE.B.4A

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides
• Subtract 11 from both sides
• Add 11 to both sides
• Divide 3 on both sides.

Tags

CCSS.7.EE.B.4A

10.    x / 2  - 5 = 3

• x = -2
• x = 2
• x = 16
• x = 8

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

solve 5(6 + 3r) + 7 ≥ 127

• r ≤ 6

• r ≥ 6

• r ≤ -6

• r ≥ -6

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.8

4x + 2(x - 6) = 12

• x = 6
• x = 4
• x = 2
• x = -2

Tags

CCSS.8.EE.C.7B

Solve the following inequality:
-4x + 14 ≤ 54

• x ≥ -10
• x ≤ -10
• x ≥ 17
• x ≤ 17

Tags

CCSS.7.EE.B.4B

3x - 8 < 3(x - 4) + 1

• x < -11

• no solution

• all real numbers

• x > -8

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.8

Solve for x.

• x = 21
• x = 7
• x = −21
• x = 4

Tags

CCSS.6.EE.B.7