Question

1+{2•[3+(N-4)•5]:6}•7=8

Answer 1

Răspuns:

Explicație pas cu pas:

1 + {2 × [3 + ( n - 4) × 5] : 6} × 7 = 8

{2 × [3 + ( n - 4) × 5] : 6} × 7 = 8 - 1

{2 × [3 + ( n - 4) × 5] : 6} × 7 = 7

2 × [3 + ( n - 4) × 5] : 6 = 7 : 7

2 × [3 + ( n - 4) × 5] : 6 = 1

2 × [3 + ( n - 4) × 5] = 1 × 6

2 × [3 + ( n - 4) × 5] = 6

3 + ( n - 4) × 5 = 6 : 2

3 + ( n - 4) × 5 = 3

( n - 4) × 5 = 3 - 3

( n - 4) × 5 = 0

n - 4 = 0 : 5

n - 4 = 0

n = 0 + 4

n = 4 → numărul căutat

Answer 2

1+{2•[3+(N-4)•5]:6}•7=8
1+{2•{3+(7-4)•5]:6}•8
1+{2•(3+3•5):6]•8
1+(2•{3+15}:6•8
8-1+2•18:6
8-1+36:6
8-1+6
7+6
13