Question

Determinati pe x din 34-2•(2660+76:x):893=28

Answer 1

Răspuns:  x = 4

Explicație pas cu pas:

34 - 2 × ( 2 660 + 76 : x ) : 893 = 28

2 × ( 2 660 + 76 : x ) : 893 = 34 - 28

2 × ( 2 660 + 76 : x ) : 893 = 6

2 660 + 76 : x = 6 × 893 : 2 → aplic metoda mersului invers

2 660 + 76 : x = 2 679

76 : x = 2 679 - 2 660

76 : x = 19

x = 76 : 19

x = 4

Answer 2

34 - 2 × ( 2660 + 76 : x ) : 893 = 28

2 × ( 2660 + 76 : x ) : 893 = 34 - 28

2 × ( 2660 + 76 : x ) : 893 = 6

2 × ( 2660 + 76 : x ) = 6 × 893

2 × ( 2660 + 76 : x ) = 5358

2660 + 76 : x = 5358 : 2

2660 + 76 : x = 2679

76 : x = 2679 - 2660

76 : x = 19

x = 76 : 19

x = 4