<span>6 + x = 12. To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12. If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.</span>
Answer:
My personal favorite is dragon ball super.
Explanation:
Explanation:
atom X
it is neutral
and may not exist independently
atom X+1
it is ion which has a charge on it positive or negative
it exists independently
I think it is the third one.
