Question

Afla x din egalitatea : 306:3-{15-5*[8-2*(3÷x)]+23}÷4=95

Answer 1

Răspuns: x = 1

Explicație pas cu pas:

306 : 3 - { 15 - 5 × [ 8 - 2 × ( 3 : x ) ] + 23} : 4 = 95

102 - { 15 - 5 × [ 8 - 2 × ( 3 : x ) ] + 23} : 4 = 95

{ 15 - 5 × [ 8 - 2 × ( 3 : x ) ] + 23} : 4 = 102 - 95

{ 15 - 5 × [ 8 - 2 × ( 3 : x ) ] + 23} : 4 = 7

15 - 5 × [ 8 - 2 × ( 3 : x ) ] + 23 = 7 × 4

15 - 5 × [ 8 - 2 × ( 3 : x ) ] + 23 = 28

15 - 5 × [ 8 - 2 × ( 3 : x ) ] = 28 - 23

15 - 5 × [ 8 - 2 × ( 3 : x ) ] = 5

5 × [ 8 - 2 × ( 3 : x ) ] = 15 - 5

5 × [ 8 - 2 × ( 3 : x ) ] = 10

8 - 2 × ( 3 : x ) = 10 : 5

8 - 2 × ( 3 : x ) = 2

2 × ( 3 : x ) = 8 - 2

2 × ( 3 : x ) = 6

3 : x = 6 : 2

3 : x = 3

x = 3 : 3

x = 1 → numarul, aflat prin metoda mersului invers