Solving Equations with Multiplicative Inverse

Solve the equation. Check your solution.

• 80

• 45

• 180

• 5

Tags

CCSS.6.EE.B.7

Solve the equation. Check your solution.

• ⁵/₃ or 1 ²/₃

• ²⁴³/₁₂₅ or 1 ¹¹⁸/₁₂₅

• 1.944

• -⁵/₃ or -1²/₃

Tags

CCSS.6.EE.B.7

Solve the equation. Check your solution.

• 24

• ¹⁴⁷/₈ or 18 ³/₈

• 168

• -24

Tags

CCSS.6.EE.B.7

What is the definition of a multiplicative inverse?

• Numbers that can be multiplied backwards

• Numbers when multiplied together equal 1

• Any number that can be multipled

• The number that is next to the variable.

Tags

CCSS.HSA.APR.A.1

Mathematical properties are what solving equations is all about! Multiplicative inverse states that dividing by a number is the same as

• multiplying by it's inverse (or the reciprocal, "flipped" version)

• dividing by it's inverse (or the "flipped version)

Tags

CCSS.HSA.REI.A.1

What should be multiplied to -3/16 to get 8/13?

• 128/39

• -128/39

• 39/128

• -39/128

Answer explanation

Let the number to be multiplied is y So, -3y/16 = 8/13 Using cross-multiplication, we get, -3y(13) = 16 × 8 i.e. -39y = 128 i.e. y = 128/(-39) i.e. y = -128/39 Hence, option 2 is correct.

Tags

CCSS.7.NS.A.2A

Solve the equation: 2/3 * x = 4

• 2

• 8

• 10

• 6

Tags

CCSS.6.EE.B.7

• 2

• -2

• 8

• 8

Tags

CCSS.8.EE.C.7B

Solve the equation: 1/2 * x = 3

• 6

• 8

• 4

• 2

Tags

CCSS.6.EE.B.7

• x=-10

• x=2

• No Solution

• All Real Numbers

Tags

CCSS.8.EE.C.7A