Question

Determină număruzl natural x din egalitatea: [(x•2+3)•4:5+6]+7-8=9 rejolvă prin metoda mersului invers

Answer 1

[(x•2+3)•4:5+6]+7-8=9

[(x•2+3)•4:5+6]+7=9+8

[(x•2+3)•4:5+6]+7=17

(x•2+3)•4:5+6=17-7

(x•2+3)•4:5+6=10

(x•2+3)•4:5=10-6

(x•2+3)•4:5=4

(x•2+3)•4=4•5

x•2+3=4•5:4

x•2+3=5

x•2=5-3

x•2=2

x=2:2

x=1

Sper ca te-am ajutat => <3

Answer 2

[(x•2+3)•4:5+6]+7=9+8
[(x•2+3)•4:5+6]+7=17/-7
(x•2+3)•4:5+6=10/-6
(x•2+3)•4:5=4/•5
(x•2+3)•4=20/:4
x•2+3=5/-3
x•2=2/:2
x=1