Question

1×2-[10+7-(x:7:4)+5×2]:8=0

Answer 1

Răspuns:

Explicație pas cu pas:

1 × 2 - [ 10 + 7 - ( x : 7 : 4 ) + 5 × 2] : 8 = 0

2 - [ 17 - ( x : 7 : 4 ) + 10] : 8 = 0

[ 17 - ( x : 7 : 4 ) + 10] : 8 = 2 - 0

[ 17 - ( x : 7 : 4 ) + 10] : 8 = 2

17 - ( x : 7 : 4 ) + 10 = 2×8

17 - ( x : 7 : 4 ) + 10 = 16

17 - ( x : 7 : 4 ) = 16 - 10

17 - ( x : 7 : 4 ) = 6

x : 7 : 4 = 17 - 6

x : 7 : 4 = 11

x = 11 × 4 × 7

x = 44 × 7

x = 308 → numărul aflat prin metoda mersului invers