8х-76х-684х=1892
-752х=1892
х=-2.5
1.
-6(x+9)=0
-6x-54=0
-6x=54
x=-9
2.
-4(5x+1)=5(4-3x)
-20x-4=20-15x
-20x+15x=20+4
-5x=24
x=-4.8
3.
7x+63=0
7x=-63
x=-9
4.
15x-20=6+2x
15x-2x=6+20
13x=26
x=2
5.
-12(x-36)=0
-12x+432=0
-12x=-432
x=36
6.
-7(3x-1)=6(1-3x)
-21x+7=6-18x
-21x+18x=6-7
-3x=-1
x=1\3
9.17+(-х)=-6.8
9.17-х=-6.8
-х=-6.8-9.17
-х=-15.97
х=15.97
130536|444
888 | ________
--------| 294
4173
3996
---------
1776
1776
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0