вычислите 17:(3/5+1/4)+(7/8-1/4)*(4/5)^2

Question

вычислите 17:(3/5+1/4)+(7/8-1/4)*(4/5)^2

Answer 1

17:(3/5+1/4)+(7/8-1/4)*(4/5)^2=17:(17/20)+(5/8)*(16/25)=20+2/5=20 2/5