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2014-05-20T23:44:45+03:00
A)0,5dam=50m
b)4335m²=0,4335ha
c)0,5x+3,9=7,46
0,5x=7,46-3,9
0,5x=3,56
x=3,56/0,5=356/100:5/10=356/100·10/5=356/50
x=7,12
2 5 2