Fill in the blank to write a one variable one step equation for the following information:Matthew has twice as many quarters as dimes. Matthew has 20 dimes

Let x be the number of quarters that Matthew has.

Since Matthew has twice as many quarters as dimes, the number of quarters he has is 2 times the number of dimes, which is 2(20)=40.

Therefore, the equation to represent this situation is:

x = 40.