Unit 2 Equations Review

Solve 47 = 3 - 6y

• y = 50/6
• y = -44/6 = -22/3
• y = 3/22
• Why me?

Tags

CCSS.7.EE.B.4A

X/2 - 5 = -3

• X = 1
• X = 2
• X = 4
• x left you!

Tags

CCSS.7.EE.B.4A

-2y = 45 + 7y

• y ohh y are you doing this, Ms J?
• y = 6
• Y = 5
• Y = -5

-5x = -40 + 3x

• X = 20
• X = -20
• Argh! 
• X = 5

-17 = (1/5)n - 20

• n = 5
• n = -15
• n= 15
• Say what?

Tags

CCSS.7.EE.B.4A

-7b - 3 = -3b + 5

• b = -2
• b = 2
• b = 5
• b = 20000000000005

-5(c - 2) = 20 - 5c + 10

• one solution
• no solution
• infinite solutions
• To infinity and beyond!

Tags

CCSS.8.EE.C.7A

-3(p +2) = -30

• p = 8
• p = -8
• p = 10
• p = 10

Tags

CCSS.7.EE.B.4A

Your cell phone bill is $21.20.  The company charges $0.25 per call. Let c = number of calls.  Write an equation to find how many calls you made.

• 0.25c = 21.20
• c - 0.25 = 21.20
• c + 0.25 = 21.20
• 0.25 ÷ c = 21.20

Tags

CCSS.HSA.CED.A.3

Scott works on cars. He charges $35 for each car plus $7 per hour. Write an equation that represents this scenario if Kylie's car bill was $63.

• 7x + 35 = 63
• 7x = 63
• 7x - 35 = 63
• 35x + 7 = 63

Tags

CCSS.HSA.CED.A.3