Răspuns:
5/28 = 0,17(857142)
Explicație pas cu pas:
[0,6:4,2 +3,(27)·2,75] : {[5:0,1(6)-10:0,5]:0,2+1,2} =
= [6/10 : 42/10 + (327-3)/99 ·275/100] : {[5: 15/90 - 10 :5/10]:2/10 + 12/10}=
= [6/10 · 10/42 + 324/99 · 11/4] : {[5 ·90/15 - 10·10/5 ] ·10/2 + 6/5} =
= [ (6·10)/(10·42) + 36/11 ·11/4] : {[450/15 - 20]·5 + 6/5} =
= [6/42 + 36/4] : [ (30-20)·5 +6/5] =
= [1/7 + ⁷⁾9] : [ ⁵⁾10·5 + 6/5] = (64/7) : (256/5) =
= 64/7 · 5/256 = (64·5)/(7·256) = 5/(7·4) = 5/28
