11,9-1 4/5×1 1/3; 16 1/2÷11+9 1/6; (83,2-80 1/6)×3/13; (0 28+1 1/3)÷11/30

Question

11,9-1 4/5×1 1/3; 16 1/2÷11+9 1/6; (83,2-80 1/6)×3/13; (0 28+1 1/3)÷11/30

Answer 1

1.14/5*11/3 равно 154/15 , 11.9-154/15 равно 49/30

Comments

16*1/2 равно 8/ 11+9*1/6 равно 11+1.5 равно 12.5 , 8/12 равно 3/4

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(83 2/10 - 80 1/6)*3/13 = (83 6/30 - 80 5/30) * 3/13= 3 1/30*3/13= 91/30*3/13= 91/130

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спасибо.

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не уверен что верно