Question

afla numărul necunoscut, apoi verifica:. 77:e=2(rest17)
72:b=5(rest2). f:56=1(rest25). c×27=81. 17×g=68. d:22=3(rest20). h:31=3(rest5)​

Answer 1

Răspuns:

Explicație pas cu pas:

77:e = 2 rest 17|-17 rest

60:e = 2

e = 60:2

e = 30

v : 30×2+17 = 77

72:b = 5 rest 2|-2 rest

70:b = 5

b = 70:5

b = 14

v : 14×5+2 = 70+2 = 72

f:56 = 1 rest 25

f = 56×1+25

f = 81

v : 56×1+25 = 81

c×27 = 81

c = 81:27

c = 3

v : 3×27 = 81

17×g = 68

g = 68:17

g = 4

v : 17×4 = 68

d:22 = 3 rest 20

d = 22×3+20

d = 66+20

d = 86

v: 22×3+20 = 86

h:31 = 3 rest 5

h = 31×3+5

h = 93+5

h = 98

v : 31×3+5 = 98

-Evergreen and ModAlex16.

Answer 2

$\it 77:e = 2\ \ rest\ 17 \Rightarrow 77=2e+17 \Rightarrow 77-17=2e \Rightarrow 60=2e \Rightarrow e=30\\ \\ \underline{Verificare}:\ \ 77:30=2\ \ rest\ 17\\ \\ \\d:22 = 3\ \ rest\ 20 \Rightarrow d=22\cdot3+20 \Rightarrowd=86\\ \\ \underline{Verificare}:\ \ 86:22=3\ \ rest\ 20\\ \\ \\ c\cdot27=81 \Rightarrow c=81:27=3;\ \ \ \underline{Verificare}:\ \ 3\cdot27=81$