Use the following problem to answer the question below:
Given: 3(x – 4) = 33
Prove: x = 15

Question

Use the following problem to answer the question below:
Given: 3(x – 4) = 33
Prove: x = 15

anonymous · Answer

Statments                                    Reasons

3(x – 4) = 33                                 Given

3x – 12 = 33                                    A

3x – 12 + 12 = 33 + 12                   B

3x + 0 = 45                                     C

3x = 45                                           D

x = 15                                   Division Property of Equality

What is the reason for A

anonymous · Answer

Distributive property of multiplication

anonymous · Answer

Can you also give me the reason for B and C @matricked Thanks

anonymous · Answer

Add 4 on each side. So, 3x now is equal to 37 or 3x = 37. Divide by 3 on each side. If we divide 3 on each side, we can see that you can't prove that x = 15 because it is not, x is actually equal to 12, not 15.