i dont remember how do this type. What is the first step?

You need to cross multiply to eliminate the fractions and solve for the variable r.

11r*10 = 6*11, then multiply to get 110r = 66.

Next multiply both sides by (1/110) to get r by itself. So (1/110)*110r = 66*(1/110)

This step is normally not shown. Multiplying both sides with the inverse of 110 is the same as multiplying the expression by 1.

So (1/110)*(110) becomes 1*r, and then r can be found.

r = 66/110 = 0.6