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Toate ,Dau coroana✌Va rog!!

Toate Dau CoroanaVa Rog class=

Răspuns :

17)195-35=160
160:2=80
a=80
b=80+35=115

18)a+2a+4a=77
7a=77
a=77:7
a=11

19)a+2a+4a=140
140:7=20
a=20x2=40

20)a=36
b=36x15=540
a+b=36+540=576

21)16x28=448
16x56=896
16x65=1040
16x98=1568

22)248x(248:4)=
248x62=15376