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----------- = ---- =2 ----------- - ------ =0,2 ---------- =1,8
2+4 6 0,7+0,8 1,5 5*0,7
d)6,53-4,22 2,31 e) 3 3
---------------- = -------- =3,3 2* -----------=2* ------ = 2*2=4
2,3-1,6 0,7 1,6+0,9 1,5
f)0,6*7 1 4,2 1 1 21
--------- * ----------- = ------ * ---- = 21*---- = ----- =7
0,2 2,2+0,8 0,2 3 3 3
=
= 1,8
= 3,3
2* = 2,4
* = 7