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Екатерина09876
@Екатерина09876
July 2022
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помогите решить
а)4(х-5) - (7х+9)=1
б)2х- 3(4-х)=5 - (х - 1)
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Anastaramm
А) 4(х-5)-(7х+9)=1
4х-20-7х-9=1
4х-7х=1+20+9
-3х=30
х=-10
б) 2х-3(4-х)=5-(х-1)
2х-12+3х=5-х+1
2х+3х+х=5+1+12
6х=18
х=3
4 votes
Thanks 4
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Answers & Comments
4х-20-7х-9=1
4х-7х=1+20+9
-3х=30
х=-10
б) 2х-3(4-х)=5-(х-1)
2х-12+3х=5-х+1
2х+3х+х=5+1+12
6х=18
х=3