Question

(18×4:2)+75-x×(9+4×2)=26​

Answer 1

Răspuns:

=(72:2)+75-X x (9+8)=26

=36+75-X x 17=26

=111-17X=26

-17X=26-111

-17X=-85

X=-85:-17

X=5

Answer 2

Răspuns:  x = 5

Explicație pas cu pas:

( 18 × 4 : 2 ) + 75 - x × ( 9 + 4 × 2 ) = 26

( 72 : 2) + 75 - x × ( 9 + 8 ) = 26

36 + 75 - x × 17 = 26

111 - x × 17 = 26

x × 17 = 111 - 26

x × 17 = 85

x = 85 : 17

x = 5 → numarul, aflat prin metoda mersului invers