Ответ:
Объяснение:
а) 6 1/3-8=-(8-6 1/3)=-(7 3/3-6 1/3)=-1 2/3;
б) -2 2/7+4 3/5 =4 3/5 - 2 2/7=>НОК(5;7)=35 =>4 21/35 -2 10/35=2 11/35;
в) 5 1/3-6 1/4= -(6 1/4 - 5 1/3)=> НОК(4;3)=12=> -(6 3/12 -5 4/12) =
-(5 15/12 - 5 4/12)=-11/12;
г) 3/8 : (-9/16) = - 3/8 * 16/9 = -2/3;
д) 5/12*(-6)= -5*6/12=-30/12=-5/2=-2 1/2;
е) -3 2/9 *3 = -29/9*3 = -29/3 = -9 2/3.
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Answers & Comments
Ответ:
Объяснение:
а) 6 1/3-8=-(8-6 1/3)=-(7 3/3-6 1/3)=-1 2/3;
б) -2 2/7+4 3/5 =4 3/5 - 2 2/7=>НОК(5;7)=35 =>4 21/35 -2 10/35=2 11/35;
в) 5 1/3-6 1/4= -(6 1/4 - 5 1/3)=> НОК(4;3)=12=> -(6 3/12 -5 4/12) =
-(5 15/12 - 5 4/12)=-11/12;
г) 3/8 : (-9/16) = - 3/8 * 16/9 = -2/3;
д) 5/12*(-6)= -5*6/12=-30/12=-5/2=-2 1/2;
е) -3 2/9 *3 = -29/9*3 = -29/3 = -9 2/3.