Need , can't understand this. write the equation in logarithmic form. 125^4/3 = 625

What is the missing statement in step 4? ? rts ? ? vtu and ? rtu ? ? vts ? rts ? ? rvs and ? rtu ? ? stv ? vrs ? ? vru and ? usr ? ? usv ? vur ? ? vus and ? uvs ? ? sru

Multiplying fractions by whole number 5 x 1/3=?

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n