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(2supra3) x [0,(3)+1supra2 :0,75] : 8supra9

Răspuns :

2/3 × [ 0,(3) + 1/2 ÷ 0,75 ] : 8/9 =
= 2/3 × [ 1/3 + 1/2 ÷ 3/4 ] ÷ 8/9 =
= 2/3 × [ 1/3 + 1/2 × 4/3 ] ÷ 8/9 =
= 2/3 × [ 1/3 + 2/3 ] ÷ 8/9 =
= 2/3 × 3/3 ÷ 8/9 =
= 2/3 × 8/9 =
= 3/4

Unde / înseamnă supra