8/15n+2/3n+n-8/15n=1 2/3n
1)1 2/3*3/5=5/3*3/5=15/15=1
2)1 2/3*12=5/3*12/1=60/3=20
-0.1202;-0,1022;-0,01202;-0,0102.
-0,0154;-0,5004;-0,54;-0,5404;
n+2421
приn=4001
4001+2421=6422
приn=4011
4011+2421=6432
приn=4111
4111+2421=6532
m-234
приm=2004
2004-234=1770
приm=2014
2014-234=1780
приm=2114
2114-234=1880
1) 3/7:1/14=3/7*14/1=6
2) 7,5-6=1,5
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