Решите 1 и 4 номер 1204

Question

Решите 1 и 4 номер 1204

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Answer 1

1) (10/3+31/6)*2/5-11/4:(3/2-2/5)=51*2/6*5-11*10/4*11=3,4-2,5=0,9
2) 10/3*12/5*(2-68/15*3/17)=(10*12/3*5)*(2-(68*3/15*17))=8*(2-204/255)=8*(2-0,8)=9,6