Explicación paso a paso:
[tex]x + 1 = 2x - 7 \\ 7 + 1 = 2x - x \\ 8 = x[/tex]
8+1=2*8-7
9=16-7
9=9
[tex]6x + 6 = 4 + 8x \\ 6x - 8x = 4 - 6 \\ - 2x = - 2 \\ 2x = 2 \\ x = \frac{2}{2} = 1[/tex]
6*1+6=4+8*1
6+6=4+8
12=12
[tex]9 + 9x = 17 + 5x \\ - 5x + 9x = 17 - 9 \\ 4x = 8 \\ x = \frac{8}{4} = 2[/tex]
9+9*2=17+5*2
9+18=17+10
27=27
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Explicación paso a paso:
[tex]x + 1 = 2x - 7 \\ 7 + 1 = 2x - x \\ 8 = x[/tex]
8+1=2*8-7
9=16-7
9=9
[tex]6x + 6 = 4 + 8x \\ 6x - 8x = 4 - 6 \\ - 2x = - 2 \\ 2x = 2 \\ x = \frac{2}{2} = 1[/tex]
6*1+6=4+8*1
6+6=4+8
12=12
[tex]9 + 9x = 17 + 5x \\ - 5x + 9x = 17 - 9 \\ 4x = 8 \\ x = \frac{8}{4} = 2[/tex]
9+9*2=17+5*2
9+18=17+10
27=27