Find and fix mistakes in equation solutions

Question 1

Solving 2x + 12 = 36: Step 1: 2x = 24. Step 2: x = 22. Where is the first mistake?

• A. Step 1
• B. Step 2
• C. No mistake

Question 2

Elena expanded 2(x + 2) = 10 as 2x + 2 = 10, which gives a wrong answer. What is the correct value of x?

x = 

Question 3

Solving 5x + 13 = 28: Step 1: 5x = 41. Step 2: x = 8.2. Where is the first mistake?

• A. Step 1
• B. Step 2
• C. No mistake

Question 4

Isla expanded 5(x + 9) = 70 as 5x + 9 = 70, which gives a wrong answer. What is the correct value of x?

x = 

Question 5

Solving 8x + 9 = 73: Step 1: 8x = 64. Step 2: x = 8. Where is the first mistake?

• A. Step 1
• B. Step 2
• C. No mistake

Question 6

Lucia expanded 4(x + 1) = 0 as 4x + 1 = 0, which gives a wrong answer. What is the correct value of x?

x = 

Question 7

Solving 8x + 14 = 46: Step 1: 8x = 32. Step 2: x = 24. Where is the first mistake?

• A. Step 1
• B. Step 2
• C. No mistake

Question 8

Ines expanded 6(x + 1) = 66 as 6x + 1 = 66, which gives a wrong answer. What is the correct value of x?

x = 

Question 9

Solving 7x + 9 = 79: Step 1: 7x = 88. Step 2: x = 12.57. Where is the first mistake?

• A. Step 1
• B. Step 2
• C. No mistake

Question 10

Ethan expanded 2(x + 4) = 26 as 2x + 4 = 26, which gives a wrong answer. What is the correct value of x?

x = 

Question 11

Solving 6x + 4 = -32: Step 1: 6x = -36. Step 2: x = −6. Where is the first mistake?

• A. Step 1
• B. Step 2
• C. No mistake

Question 12

Sofia expanded 3(x + 6) = 12 as 3x + 6 = 12, which gives a wrong answer. What is the correct value of x?

x = 

Question 13

Solving 2x + 5 = 5: Step 1: 2x = 0. Step 2: x = -2. Where is the first mistake?

• A. Step 1
• B. Step 2
• C. No mistake

Question 14

Fatima expanded 6(x + 3) = -12 as 6x + 3 = -12, which gives a wrong answer. What is the correct value of x?

x = 

Question 15

Solving 7x + 11 = 60: Step 1: 7x = 49. Step 2: x = 42. Where is the first mistake?

• A. Step 1
• B. Step 2
• C. No mistake

Question 16

Ana expanded 3(x + 8) = 33 as 3x + 8 = 33, which gives a wrong answer. What is the correct value of x?

x =