1) (714:7-100)6=(102-100)6=2*6=12
2)(936:9-618:6)3=(104-103)3=1*3=3
1. 4,6x+3,8x-1,6=0,5
8,4x=0,5+1,6
8,4x=2,1
x=2,1:8,4
x=0,25
8.96≈9
3.05≈3
4.64≈4.6
3.052≈3.05
4.025≈4.03
7.086≈7.09
657.29≈657
538.71≈539
М N P K
.___________.___________._________.
MN=1/4 м
MP=MN+1/8=1/4+1/8=4/16+2/16=6/16 м
PK=MP-5/16=6/16-5/16=1/16 м
MK=MP+PK=6/16+1/16=7/16 м