Combine like terms 2/3a+4/3b-4/3a

a) 4/3b-2/3a
b)2/3ab
c)2/3a
d)4/3b-8/9a

A)

Step-by-step explanation:

You cannot add a variable that is not the same to another variable. Example:

You can add a+a=2a

You can't add b+a because it is not the same variable

square root of 36/6 = 2.449489743

square root of 16/6 = 1.632993162

square root of 6 = 2.449489743

the answer is square root of 16/6 because the square root of 36/6 is the same answer as square root of 6 = 2.449489743