Which equation represents the following relationship?

When 2/3 is added to 1/3 of a number, it equals 0.

(1 point)
Responses

2/3x+1/3=0
Start Fraction 2 over 3 End Fraction x plus Start Fraction 1 over 3 End Fraction equals 0

2/3x−1/3=0
Start Fraction 2 over 3 End Fraction x minus Start Fraction 1 over 3 End Fraction equals 0

1/3x+2/3=0
Start Fraction 1 over 3 End Fraction x plus Start Fraction 2 over 3 End Fraction equals 0

1/3x−2/3=0

Start Fraction 1 over 3 End Fraction x minus Start Fraction 2 over 3 End Fraction equals 0

what

The correct equation is:

1/3x + 2/3 = 0