Solving Equations and Inequalities

Which property of real numbers was used to get from Step 3 to Step 4?

• Addition Property of Equality
• Subtraction Property of Equality
• Additive Inverse Property
• Substitution Property

Tags

CCSS.HSA.REI.A.1

Which property of real numbers justifies the work shown from Step 1 to Step 2?

• Distributive Property
• Commutative Property
• Identity Property
• Associative Property

Tags

CCSS.7.NS.A.1D

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:

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

• x = 1.2

• x = 6

• x = -6

• x = 7.5

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.CED.A.1

Solve:
3x + 15 = 3(x + 5)

• No Solution
• x = 15
• Infinitely Many Solutions
• x = 0

Tags

CCSS.8.EE.C.7A

Write an equation to represent this word problem.

• 40 - 2f = 8

• 40 + 2f = 8

• 8 - 2f = 40

• 40 = 2f - 8

Tags

CCSS.HSA.CED.A.3

Solve for v.

• 60
• -3
• 15
• 3

Tags

CCSS.7.EE.B.4A

Solve for x:

• x = yb - v
• x = by - v
• x = by + v

Tags

CCSS.HSA.REI.B.3

Solve the equation for y. 
2x + 3y = 4

• y = (4-2x)/3
• y = (2x-4)/3
• x  = (4-3y)/2
• y = (4-2x)/ -3

Tags

CCSS.6.EE.C.9

What is the value of x in this equation?

2x + 2 = −52

• −25

• −27

Tags

CCSS.7.EE.B.4A