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uli89609
@uli89609
July 2022
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Упростите выражение.
-2(2,7x-1)-(6-3,4x)+8(0,4x-2) и вычислить его значение при x=-5/6
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Banabanana
Verified answer
-2(2,7x-1)-(6-3,4x)+8(0,4x-2) = -5,4х + 2 - 6 + 3,4х + 3,2х - 16 = 1,2х -20
при х = -5/6
1,2х -20 = 1,2 * (-5/6) - 20 = 6/5 * (-5/6) - 20 = -1 - 20 = -21
4 votes
Thanks 8
charme11
-2(2,7x-1)-(6-3,4x)+8(0,4x-2) = -5,4х+2-6+3,4х+3,2х-16= 1,2х-20
При х=-5/6
1,2(-5/6)-20= 1 1/5(-5/6)-20= 6/5(-5/6)-20= -1-20=-21
4 votes
Thanks 3
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Answers & Comments
Verified answer
-2(2,7x-1)-(6-3,4x)+8(0,4x-2) = -5,4х + 2 - 6 + 3,4х + 3,2х - 16 = 1,2х -20при х = -5/6
1,2х -20 = 1,2 * (-5/6) - 20 = 6/5 * (-5/6) - 20 = -1 - 20 = -21
При х=-5/6
1,2(-5/6)-20= 1 1/5(-5/6)-20= 6/5(-5/6)-20= -1-20=-21