Помогите пожалуйста с примерами:

1) - (14,05 - 1 1/4) : 0,04 - 13,8*13 =

2) 2х + (1/3х - 1 1/9) * (-2 1/4)= -3/5

3) 4*0,85 - 1/7 : 5/14 - 1,56 : (-0,3)=



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