Ответ:
a) (5х-3)+(7х-4)=8-(15-11х)
5х-3+7х-4=8-15+11х
5х+7х-11х=8-15-3-4
х=-14
б) (4х+3)-(10х+11)=7+(13-4х)
4х+3-10х-11=7+13-4х
4х-10х+4х=7+13-3+11
-2х=28
в) (7-10х)-(8-8х)+(10х+6)=-8
7-10х-8+8х+10х+6=-8
-10х+8х+10х=-8-7+8-6
-8х=-13
х= 8
13
г) (2х+3)+(3х+4)+(5х+5)=12-7х
2х+3+3х+4+5х+5=12-7х
2х+3х+5х+7х=12-3-4-5
17х=0 (неверно)
Ответ: корней нет
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Ответ:
a) (5х-3)+(7х-4)=8-(15-11х)
5х-3+7х-4=8-15+11х
5х+7х-11х=8-15-3-4
х=-14
б) (4х+3)-(10х+11)=7+(13-4х)
4х+3-10х-11=7+13-4х
4х-10х+4х=7+13-3+11
-2х=28
х=-14
в) (7-10х)-(8-8х)+(10х+6)=-8
7-10х-8+8х+10х+6=-8
-10х+8х+10х=-8-7+8-6
-8х=-13
х= 8
13
г) (2х+3)+(3х+4)+(5х+5)=12-7х
2х+3+3х+4+5х+5=12-7х
2х+3х+5х+7х=12-3-4-5
17х=0 (неверно)
Ответ: корней нет