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Nastya201444
@Nastya201444
July 2022
2
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помогите решить
Упростите выражение:
а) (а - 2) + (а - 3) - (2а + 7)=
б) 2 * (а - 3) - (5а + 6)=
в) -3 * (2х - 9) + (-5х + 1)=
г) (х - 3) + (х - 5) - (7 - 3х)=
д) -2 * (m - 3) - (3m - 5)=
е) 4 * (2а - 1) + (7 - 5а)=
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nafanya2014
Verified answer
а) (а - 2) + (а - 3) - (2а + 7)=a-2+a-3-2a-7=-12
б) 2 * (а - 3) - (5а + 6)=2a-6-5a-6=-3a-12
в) -3 * (2х - 9) + (-5х + 1)=-6x+27-5x+1=-11x+28
г) (х - 3) + (х - 5) - (7 - 3х)=x-3+x-5-7+3x=5x-15
д) -2 * (m - 3) - (3m - 5)=-2m+6-3m+5=-5m+11
е) 4 * (2а - 1) + (7 - 5а)=8a-4+7-5a=3a+3
2 votes
Thanks 2
Eva0113
A)-2a-12
б)3
в)-х+28
г)-15+3х
д)-5m+11
e)3a-11
0 votes
Thanks 2
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Answers & Comments
Verified answer
а) (а - 2) + (а - 3) - (2а + 7)=a-2+a-3-2a-7=-12б) 2 * (а - 3) - (5а + 6)=2a-6-5a-6=-3a-12
в) -3 * (2х - 9) + (-5х + 1)=-6x+27-5x+1=-11x+28
г) (х - 3) + (х - 5) - (7 - 3х)=x-3+x-5-7+3x=5x-15
д) -2 * (m - 3) - (3m - 5)=-2m+6-3m+5=-5m+11
е) 4 * (2а - 1) + (7 - 5а)=8a-4+7-5a=3a+3
б)3
в)-х+28
г)-15+3х
д)-5m+11
e)3a-11