Respuesta :
Respuesta:
1) 3x+7 = 2x-4
3x-2x = -4-7
1x = -11
x = -11/1
x = -11
2) 5x-9 = 3x+6
5x-3x = 6+9
2x = 15
[tex]x=\frac{15}{2}[/tex]
3) 2x-5 = 3x+4
2x-3x = 4+5
-1x = 9
x = 9/-1
x = -9
4) 5x-1 = 7x-4
5x-7x = -4+1
-2x = -3
x = -3/-2
[tex]x=\frac{3}{2}[/tex]