8/13 Equation and Inequality Review

Solve 4 ( 2x + 3) = 5x + 3x – 6

• x = - 18

• x = -9/2

• x = -9/8

• no solution

Solve the equation for x.

- 7x – 12 = - 7x + 3 (– 4 – x )

• x = - 11

• x = 5

• x = 0

• no solution

Solve  $\frac{3}{7}$  x + 5 = 8 

• x = 7 

• x = 1  2/7

• x = - 7 

• x = 7  2/3 

Which expression is equivalent to

3x + 5x – ( x – 9) + 12 ?

• 9x + 3

• 7x + 21

• 7x + 3

• 15x - 84

Which step did the student make their first mistake?
 $\frac{x-3}{3}=\frac{x+4}{4}$           
Step 1 : 4 ( x – 3) = 4 ( x + 4)
Step 2: 4x – 3 = 4x + 16
Step 3: 4x = 4x + 13
Step 4: 0x = 28
Step 5: 0 ≠ 28 No Solution

• Step 1

• Step 2

• Step 3

• No mistakes

Solve:

• A
• B
• C
• D

Solve and graph:

• A
• B
• C
• D

Solve:  -3 ≤ 2x - 1 ≤ 5

• -1 ≤ x ≤ 3
• -1 < x < 3
• 1 < x < 3
• 1 ≤ x ≤ 3

Solve:  
3x + 2 < -4  or  4x + 4 > 24

• x < -2  or  x > 5 
• x < 2  or  x > 5
• x < -2  and  x > 5 
• x < 2  and  x > 5

Solve.
|2x - 1| = 7

• x = -3 or x = 4
• x = 4
• x = 4 or x = -4
• no solution