11.22.2019 Pre-Algebra

Solve: 5x - 14 = 8x + 4

• 6
• -6
• -18/13
• 10/3

Tags

CCSS.7.EE.B.3

4 = 2(x + 3)

• 1/2
• 7/2
• -1
• 5

Tags

CCSS.7.EE.B.4A

-2x-7+3x=10

• x=-2
• x=3
• x=10
• x=17

Tags

CCSS.6.EE.B.7

Which property justifies the third step?
         2 - 7 = 3x + 7 - 7
          2 - 7 = 3x + 0
          2 - 7 = 3x

• Inverse Property of Addition
• Subtraction Property of Equality
• Commutative Property of Addition
• Identity Property of Addition

Tags

CCSS.HSA.REI.A.1

Three more than twice the sum of a number and five.  

• 3 + (2x + 5)
• (2x + 5) + 3
• 2(x + 5) + 3
• 2/(x + 5) + 3

Tags

CCSS.6.EE.A.2A