Question

6.Găsește numerele necunoscute că după model 967:(5×a+1)=10 rest 7
D : î =C r
Î=(d-r):c
5×a+1=(967-7):10
5×a+1=960:10
5×a+1=96
5×a=96-1
5×a=95:5
a=95:5
a=19 exemplul

1. (4×b+3):47=19 rest 6

2. 20:a×35=700

3. 16×a:8=32

4. 19×6=144

5. a:13×9=819

6. 16×12:a=6​

Answer 1

Răspuns:

1) (4×b+3):47=19rest6

4×b+3=(47-6)×19

4×b+3=41×19

4×b+3=779

4×b=779-3

4×b=776

b=776:4

b=194

2)20:a×35=700

20:a=700:35

20:a=20

a=20:20

a=1

3)16×a:8=32

16×a=32×8

16×a=256

a=256:16

a=16

5)a:13×9=819

a:13=819:9

a:13=91

a=91×13

a=1183

6)16×12:a=6

12:a=16×6

12:a=96

a=96:12

a=8