5\4+3•1\2-5\18
5\4+3\2-5\18
45+54-10
36
Ответ: 89\36
1) 172,2x-128,63x=78,426
43,57x=78,426
x=1,8
2) 62,32y-23,27y+17,85y=149,078
56,9y=149,078
y=2,62
3) 178,14z+740,19z-96,43z=205,475
821,9z=205,475
z=0,25
4) (4,32x+2,16x):4,05=0,4
4,32x+2,16x=1,62
6,48x=1,62
x=0,25
1,514 + 0,4872 = 2,0012 = 2
5,1002- 0,005 = 4,0952 = 4,09
5,7 * 0,053 = 0,3021 = 0,3
0,649636 : 0,806 = 0,806 = 0,8