Solving Equations Using Addition or Subtraction

Which property justifies the work in solving this equation?

• Addition Property of Equality

• Additive Inverse Property

• Identity Property of Addition

• Subtraction Property of Equality

Tags

CCSS.HSA.REI.A.1

The addition property of equality states that if the same amount is added to both sides of an equation, then the equation is still true. Which choice shows this by using the starting equation n - 2 = 5

• n - 2 = 5 + 2

• n - 2 + 2 = 5 + 2

• n + 2 - 5

• n - 2 + 5 = 2

Tags

CCSS.HSA.REI.A.1

Which equation shows the subtraction property of equality by changing the equation a + 2 = 11

• a + 2 - 5 = 11 - 5

• a + 2 + 5 = 11 + 5

• a + 2 ÷ 5 = 11 ÷ 5

• a + 2 = 11

Tags

CCSS.HSA.REI.A.1

Balanced (or true) equations have the same value on both the left and right sides of the equal sign. Which equations are balanced?

• 3 + 5 = 9

• 3 + 5 = 8

• 3 + 5 = 5 + 3

• 3 + 5 - 2 = 8 - 2

• 3 + 5 - 7 = 3 + 5 + 7

Tags

CCSS.5.OA.B.3

x + 12 = 20

• x = 32

• x = -32

• x = 8

• x = -8

Tags

CCSS.6.EE.B.7

x + 12 = 20

• x = 32

• x = -32

• x = 8

• x = -8

Tags

CCSS.6.EE.B.7

Solve
y + 3 = -2

• 1

• 5

• -5

Tags

CCSS.6.EE.B.7

x - 5 = -14

Tags

CCSS.6.EE.B.7

k - 1/3 = 5/6

• 1/2

• -1/2

• -1 1/16

• 1 1/16

Tags

CCSS.6.EE.B.7

Solve the equation

-5.47+k=14.19

Tags

CCSS.6.EE.B.7