Write an expression: The quotient of a number h and 3 decreased by 2. Would you write it like this: h/3-2

(h/3) / 2

That makes clear when to subtract the 2.

Yes, you have written the expression correctly. To solve this expression, you would first divide the number h by 3, and then subtract 2 from the quotient. So the expression h/3 - 2 represents the quotient of h and 3 decreased by 2.