Solving & Justifying Solutions to Equations

Solve.  5n - 4 = 21

• 10
• -5
• 5
• 2

Tags

CCSS.7.EE.B.4A

Solve:
3(x - 2) = 18

• 6.7
• 4
• 8
• -4

Tags

CCSS.7.EE.B.4A

6x + 3(-x + 11) = 3

• -10
• 10
• 15
• -15

Tags

CCSS.8.EE.C.7B

• A
• B
• C
• D

Tags

CCSS.8.EE.C.7B

0.75 + 2(a - 0.5) = 3a - 0.4

• 0.15
• 5
• 1.5
• 3.75

Tags

CCSS.8.EE.C.7B

Which step cannot be performed first when solving the equation
5 - 2(x - 7) = x + 1 + 3x

• Distributing -2 to (x - 7)
• Combining x and 3x
• Subtracting 1 from both sides
• 5 - 2

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

 $-3\left(4x+3\right)+4\left(6x+1\right)=43$  

•  $x=3.25$  

•  $x=4.25$  

•  $x=-4$  

•  $x=4$  

Tags

CCSS.8.EE.C.7B

 $-4k+2\left(5k-6\right)=-3k-39$  

•  $k=-3$  

•  $k=12$  

•  $k=6$  

•  $k=1$  

Tags

CCSS.8.EE.C.7B

Solve:

5y + 34 = -2(-7y + 1)

• y = -4

• y = 9

• y = 4

• y = 36/19

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

CCSS.HSA.CED.A.1

 $6x+1=-6\left(1-x\right)$  

•  $x=1$  

•  $x=-6$  

• No Solution

• Infinitely Many Solutions

Tags

CCSS.8.EE.C.7A