Question

{[(76×a-8):4-96]×3-72}:45=2 Va rog urgent îmi trebuie ​

Answer 1

{[(76xa-8):4-96]×3-72}:45=2

[(76xa-8):4-96]×3-72 = 2 × 45

[(76xa-8):4-96]×3-72 = 90

[(76xa-8):4-96]×3 = 90 + 72

[(76xa-8):4-96]×3 = 162

(76xa-8):4-96 = 162 : 3

(76xa-8):4-96 = 54

(76xa-8):4 = 54 + 96

(76xa-8):4 = 150

76 × a - 8 = 150 × 4

76 × a - 8 = 600

76 × a = 600 + 8

76 × a = 608

a = 608 : 76

a = 8