Ответ:
x-1.8+3x-5x-8.2=9x
x+3x-5x-9x=1.8+8.2
-10x=10
x= 10:(-10)
x= -1
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Ответ:
x-1.8+3x-5x-8.2=9x
x+3x-5x-9x=1.8+8.2
-10x=10
x= 10:(-10)
x= -1