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ereev
@ereev
June 2022
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ПОМОГИТЕ РЕШИТЬ,ОЧЕНЬ СРОЧНО!
1,3+1,6*(1 2/3 ; 2,5-2)
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prettypushkova
Verified answer
1,3 + 1,6 * (1 2/3 : 2,5 - 2) = - 5/6
1) 1 2/3 : 2,5 = 5/3 : 5/2 = 5/3 * 2/5 = 2/3
2) 2/3 - 2 = - 1 целая 1/3 = - 4/3
3) 1,6 * (-4/3) = 8/5 * (-4/3) = - 32/15 = - 2 целых 2/15
4) 1,3 + (-2 2/15) = 1 3/10 - 2 2/15 = 1 9/30 - 2 4/30 = - 25/30 = - 5/6
Пояснения:
1 целая 2/3 = (1*3+2)/3 = 5/3
2,5 = 25/10 = 5/2 - сократили на 5
1,6 = 16/10 = 8/5 - сократили на 2
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Answers & Comments
Verified answer
1,3 + 1,6 * (1 2/3 : 2,5 - 2) = - 5/61) 1 2/3 : 2,5 = 5/3 : 5/2 = 5/3 * 2/5 = 2/3
2) 2/3 - 2 = - 1 целая 1/3 = - 4/3
3) 1,6 * (-4/3) = 8/5 * (-4/3) = - 32/15 = - 2 целых 2/15
4) 1,3 + (-2 2/15) = 1 3/10 - 2 2/15 = 1 9/30 - 2 4/30 = - 25/30 = - 5/6
Пояснения:
1 целая 2/3 = (1*3+2)/3 = 5/3
2,5 = 25/10 = 5/2 - сократили на 5
1,6 = 16/10 = 8/5 - сократили на 2