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Linnaean
@Linnaean
July 2022
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Раскройте скобки и преведите подобные слагаемые: а) -(11,3+8,2а)+(8,4-1,8а)
Б) 2/9(1,8а-4,5б)-1,5(0,4а-0,2б) В)0,7(8t-0,4р)-0,2(2,5а-1,5б) г) 9(1,2х-4)-8,3х-4(1,3-х)+2
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Msrgoshka
А) -(11,3+8,2а)+(8,4-1,8а)=-11,3-8,2а+8,4-1,8а=-2,9+6,4а
б)2/9(1,8а-4,5б)-1,5(0,4а-0,2б)=1/2а- 1б-0,6а-0,3б=-0,1а-1,3б
в)0,7(8t-0,4p)-0,2(2,5a-1,5б)= 5,6t-0,28p+0,5а+0,3б
г)9(1,2х-4)-8,3х-4(1,3-х)+2= 10,8х-36-8,3х-5,2+4х+2=6,5х-39,2
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Report "9(1,8а-4,5б)-1,5(0,4а-0,2б) В)0,7(8t-0,4р)-0,2(2,5а-1,5б) г) 9(1,2х-4)-8,3х-4(1,..."
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Answers & Comments
б)2/9(1,8а-4,5б)-1,5(0,4а-0,2б)=1/2а- 1б-0,6а-0,3б=-0,1а-1,3б
в)0,7(8t-0,4p)-0,2(2,5a-1,5б)= 5,6t-0,28p+0,5а+0,3б
г)9(1,2х-4)-8,3х-4(1,3-х)+2= 10,8х-36-8,3х-5,2+4х+2=6,5х-39,2