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Calculati:
[2, (3)*0,3+7, (1)*4,5]:1,2=?


Răspuns :

[ (23 - 2)/9 × 3/10 + (71 - 7)/9 × 45/10 ] : 12/10 =
= ( 21/9 × 3/10 + 64/9 × 9/2 ) × 5/6 =
= ( 7/10 + 32 ) × 5/6 = (7 + 320)/10 × 5/6 = 1635/12 = 136,25