Question

What's the answers to this question?

Answer 1

• 6x=42
• x=42/6
• x=7

#A

• x-7=0=>x=7

Yes

#B

• 4x/2=14
• 2x=14
• x=7

Yes

Rest are not

Answer 2

• A and B

Explanation:

Solve the equation and compare with the choices:

• 6x = 42 ⇒ x = 7

• (A) x - 7 = 0 ⇒ x = 7, yes
• (B) 4x/2 = 14 ⇒ 2x = 14 ⇒ x = 7, yes
• (C) x - 1 = 8 ⇒ x = 9, no
• (D) 6x - 1 = 23 ⇒ 6x = 24 ⇒ x = 4, no