Question

For which value of x is the equation 2(1 + x) = x + 3 true?
A) 1
B) 2
C) 3
D) 4


I think it is c.

Answer 1

You think it is 3? Did you actually solve the equation to determine what it really is?

Better yet, does the value 3 work in the equation?

2(1+3) ≠ 3+3
Bzzzt. Now it's time to do the math:

2(1 + x) = x + 3
2+2x = x+3
...

Now what do you think?

Answer 2

Sorry I did not understand the question probably.The answer is 1 because, 2(1 +1) = 1+ 3 and both equals 4. Thank you!