-12(х+6,7)=0
-12х-80,4=0
-12х=80,4
х=80,4:(-12)
х=-6,7
====================
-12(x+7)=0
-12x-84=0
-12x=84
x-=12:84
x= -7
Ответ: -7
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Verified answer
-12(х+6,7)=0
-12х-80,4=0
-12х=80,4
х=80,4:(-12)
х=-6,7
====================
-12(x+7)=0
-12x-84=0
-12x=84
x-=12:84
x= -7
Ответ: -7