Помогите плизз.
1)12х-5=7х+10
2)4(3х+5)-6х=2
3)3х-7=4(2х-3)-5
4)17-2=44(2х-3)-5
5)6х-3(5х+4)-2(7х-3)=-6
6)-2(х+21)-3(х-14)=-5х
1)12х-5=7х+10
2)4(3х+5)-6х=2
3)3х-7=4(2х-3)-5
4)17-2=44(2х-3)-5
5)6х-3(5х+4)-2(7х-3)=-6
6)-2(х+21)-3(х-14)=-5х
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Ответ:
Пошаговое объяснение:
12х-5=7х+10
12х-7х=10+5
5х=15
х=3
4(3х+5)-6х=2
4*3х+5*6х=2
20+6х=2
х=-18:6
х=-3
3х-7=4(2х-3)-5
3х-7=4*2х-4*3-5
-7+3х=-17+8х
3х-8х=-10
х=-10:(-5)
х=2
17-2=44*(2х-3)-5
15=44*2х-44*3-5
15=-137+88х
х=-152/88
х=19/11
6х-3(5х+4)-2(7х-3)=-6
6х-3*5х-3*4-2*7х+2*3=-6
-6-23х=-6
-23х=0
х=0
-2(х+21)-3(х-14)=-5х
-3х-42-2(х+21)=-5х
-3х-42-2х+42=-5х
-5х=-5х
х=0