Chapter 6:Solving Equations

Translate the following sentence into an equation:

The sum of twice a number x and 13 is two less than 3 times x.

• 2 (x + 13) + 3x - 2

• 2x + 13 = 2 - 3x

• 2x + 13 = 3x - 2

• 2x + 13 = 3 (x - 2)

The difference of a number x and 2 is 7.

• x - 2 = 7

• x + 2 = 7

• 2x = 7

• 2/x = 7

Tags

CCSS.6.EE.A.2A

7 times a number a is 42.

• 7a = 42

• 7 + a = 42

• 7/a = 42

• 7 - a = 42

Tags

CCSS.HSA.CED.A.3

To solve the equation below, you would:
x - 62 = 123

• add 62 to each side
• subtract 62 from each side
• multiply each side by 62
• Add 123 to each side

The objective when solving an equation is to....

• isolate the variable.
• check the solution.
• guess and check.
• Combine Like Terms.

Tags

CCSS.7.EE.B.4A

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides
• Subtract 11 from both sides
• Add 11 to both sides
• Divide 3 on both sides.

Tags

CCSS.7.EE.B.4A

 What is the second step in solving the following equation?
-3x + 5 = 20

• Subtract 5 from both sides
• Divide both sides by -3
• Divide both sides by 3
• add 3x to both sides

Tags

CCSS.7.EE.B.4A

What inequality does the number line graph represent?

• x ≤ 4
• x ≥ -4
• x < -4
• x < 4

Tags

CCSS.6.EE.B.8

What inequality does the number line graph represent?

• x ≥ 3
• x > 3
• x < -3
• x ≤ 3

Tags

CCSS.6.EE.B.8

s + 9 ≥ -25

• s ≥ -18
• s ≥ -34
• s ≤ 18
• s ≥ 34

Tags

CCSS.7.EE.B.4B