Ответ:1) 2x+3x+1=(2+3)x+1=5x+1
2)2x+x+2=0
3x+2=0
3x=-2
x=
3)9x+6x+1=0
15x=-1
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Ответ:1) 2x+3x+1=(2+3)x+1=5x+1
2)2x+x+2=0
3x+2=0
3x=-2
x=![-\frac{2}{3} -\frac{2}{3}](https://tex.z-dn.net/?f=-%5Cfrac%7B2%7D%7B3%7D)
3)9x+6x+1=0
15x=-1
x=![-\frac{1}{15} -\frac{1}{15}](https://tex.z-dn.net/?f=-%5Cfrac%7B1%7D%7B15%7D)