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afla numerele necunoscute.a:3=15 r 2 b:7=9 r5 c×2=60 5×d=95 e:21=3 r 4 (f-2):13=4​

Răspuns :

a:3=15r2 a=3×15+2 a=45+2 a=47

b:6=9r5 b=6×9+5 b=54+5 b=59

c×2=60 c=60:2 c=30

5×d=95 d=95:5 d=19

e:21=3r4 e=3×21+4 e=63+4 e=67

(f-2):13=4 f-2=4×13 f-2=52 f=52+2 f=54