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2014KOTIK2014
@2014KOTIK2014
November 2021
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Раскройте скобки и приведите подобные слагаемые:
1) 3(5a+4)-11a
2) -0,2(4b-7)+1,4b
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prettypushkova
Verified answer
1) 3(5а + 4) - 11а = 15а + 12 - 11 а = (15а - 11а) + 12 = 4а + 12
2) - 0,2(4b - 7) + 1,4b = - 0,8b + 1,4 + 1,4b = (1,4b - 0,8b) + 1,4 = 0,6b + 1,4
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Answers & Comments
Verified answer
1) 3(5а + 4) - 11а = 15а + 12 - 11 а = (15а - 11а) + 12 = 4а + 122) - 0,2(4b - 7) + 1,4b = - 0,8b + 1,4 + 1,4b = (1,4b - 0,8b) + 1,4 = 0,6b + 1,4