Solve Equations with Model

• x = 10

• x = 9

• x = -10

• x = -9

Tags

CCSS.8.EE.C.7B

• x = 10

• x = 5

• x = 3

• x = -3

Tags

CCSS.8.EE.C.7B

• -4

• 2/3

• 6

• 5/2

Tags

CCSS.3.MD.D.8

Which models the equation -5x + 4 = 7x - 8?

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Which models the solution to the equation -5x + 4 = 7x - 8?

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Solve for y: 3y + 4 = - y - 6

• y = - ⅕

• y = - ½

• y = - 5/3

• y = - 5/2

Shawn solves the following equation as shown. Shawn's solution is marked incorrect. Which best explains Shawn's error?

• Shawn added 4 to both sides of the equation instead of subtracting 4.

• Shawn multiplied by -5 on both sides of the equation instead of multiplying by - ⅕.

• Shawn multiplied by -5 on both sides of the equation instead of dividing by - ⅕.

• Shawn subtracted ⅗x on the left side of the equation instead of adding ⅗x.

Tags

CCSS.HSA.REI.A.1

Solve for n: 3x - 7 = 2n + 5

• n = 12/5

• n = -12

• n = 12

• n = 1/12

Solve for n: 30 - 4n = 9n - 9

• n = 4.2

• n = 7.8

• n = -3

• n = 3

What is the value of x? Round to the nearest tenth.

½x - 2.25 = 3.6 + 4x

• x = -1.3

• x = -0.3

• x = -1.7

• x = -0.8