Anumber increased by four is the same as 19-2 times the number

Convert 2000 swiss francs to dutch guilders

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle