Question

34-2·(2660+76:X):893=28

Answer 1

Răspuns

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 × ( 2 660 + 76 : X ) = 6 × 893

2 × ( 2 660 + 76 : X ) = 5 358

2 660 + 76 : X  = 5 358 : 2

2 660 + 76 : X  = 2 679

76 : X = 2 679 - 2 660

76 : X = 19

X = 76 : 19

X = 4 →  numarul, aflat prin metoda mersului invers

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