Question

1)1/2+1/3(13/4+5/6*1/8)=
2)5/3*4/6+(8/6-5/3)=
3)2/4-1/2(3/8+6/7*1/5=
решите пожалуйста!!! 

Answer 1

1)1/2+1/3(13/4+5/6*1/8)= 
5/6 * 1/8 =  5/48
13/4 + 5/48 =  156/48 + 5/48 = 161/48 
1/3 * 161/48 = 161/44
1/2 + 161/144 = 72/144 +161/144 = 233/144 =  1  89/144

2)5/3*4/6+(8/6-5/3)=
8/6 -5/3 =  8/6 -10/6 = - 2/6
5/3 * 4/6 =  20/18 = 10/9
10/9 + ( - 2/6) = 20/18 -6/18 = 14/18 = 7/9

3)2/4-1/2(3/8+6/7*1/5=  решаю как если скобка после 1/5
6/7 * 1/5 =  6/35
3/8 +6/35 = 105/280 +48/280 = 153/280
1/2 * 153/280 = 153/560
2/4 - 153/560 =  280/560 -153/560 =  127/560 

Answer 2

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