выполните действия
а) (1/2+1/5) : 2 -3/10
б)(3/4 - 5/12) * 8 +1/18
в) ( 7/15 + 4/5) : 3 - 1/9
г) (3/7-1/21) *14 - 1/6
а) (1/2+1/5) : 2 -3/10
б)(3/4 - 5/12) * 8 +1/18
в) ( 7/15 + 4/5) : 3 - 1/9
г) (3/7-1/21) *14 - 1/6
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Answers & Comments
б)(9/12-5/12)*8+1/18=4/12*8+1/18= 8/3+1/18=49/18=2 13/18