Ответ:
(8x+3)-(10x+6)=9
8x+3-10x-6=9
-2x-3=9
-2x=9+3
-2x=12
x=-6
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-2х-12=0
-2х=12
х=-6
Ответ:
(8x+3)-(10x+6)=9
8x+3-10x-6=9
-2x-3=9
-2x=9+3
-2x=12
x=-6