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a)
1,4-0,02 =1,38
b)
1,4+0,02 =1,42
2.
a)
6+0,2 =6,2
100%*0,2/6,2 =20/6,2% ≈3,225%≈3,2%
b)
6-0,2 =5,8
100%*0,2/5,8 =20/5,8% ≈5,44%≈5,4%