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Viktoriy12802
@Viktoriy12802
March 2022
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максолащ
А) -1,5x(-6b) = b(1,5x6) = 9b
б) -4m-15n+3m+18n = m(-4+3)-n(15+18)= -m-32n = -(m+32n)
в)-2(х-3)+4(х+1)= -2х+6+4х+4= х(-2+4)+(6+4)= 2х+10
г) b+(7-b)-(14-b) = b+7-b-14+b = (b-b+b)+7-14 = b+(-7)= b-7
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Viktoriy12802
Где написано-1,5*(-6b)
Viktoriy12802
Спасибо
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Answers & Comments
б) -4m-15n+3m+18n = m(-4+3)-n(15+18)= -m-32n = -(m+32n)
в)-2(х-3)+4(х+1)= -2х+6+4х+4= х(-2+4)+(6+4)= 2х+10
г) b+(7-b)-(14-b) = b+7-b-14+b = (b-b+b)+7-14 = b+(-7)= b-7