Ответ:
19x+7=9-x
19x+x=9-7
20x=2
x= 2/20
x= 1/10
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19x+x=9-7
20x=2
x=2:20
x=0,1
Ответ:
19x+7=9-x
19x+x=9-7
20x=2
x= 2/20
x= 1/10