Ответы на вопрос:
= - 2 5/6 1) -4 1/26+3 8/39= - 4 3/78+3 16/78= - 81/78 - 16/78= - 65/78= - 5/6 2) -5/6 * 2 3/5= - 5/6 * 13/5= - 13/6= - 2 1/6 3) -7,4+6,3= - 1,1 4) - 1,1: 1 4/7= - 11/10 : 11/7= - 11/10 * 7/11= - 7/10 5) -2 1/6+(-7/10)= - 2 5/30 - 21/30= - 2 25/30= - 2 5/6 . = -2 1) - 4/5*2= - 8/5 2) - 2,125 * (-8/5)=17/8 * 8/5=17/5=3 2/5 3) 0,8 * (-2 1/8= - 8/10 * 17/8= - 17/10 4) 17/5 * ( - 17/10)= - 2
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