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5x-8x=3+6 -15-6= -24+3
-3x=9 -21 = -21
x=9:(-3)
x= -3
2)8x-10=-10x+3 verificacion 8.13/18-10=(-10).13/18+3
8x+10x=3+10 52/9-10 = -65/9+3
18x=13 (-38/9) = (-38/9)
x=13:18
x=13/18
3) 4x-5=2x-1 verificacion 4.2-5= 2.2-1
4x-2x=-1+5 8-5 = 4-1
2x= 4 3 = 3
x=4:2
x=2
4) 6(x+3)=8(x+1) verificacion 6(5+3)=8(5+1)
6.x+6.3 = 8.x+8.1 30+18 = 40 +8
6x + 18 = 8x + 8 48 = 48
6x-8x =8-18
-2x = -10
x= -10: -2
x= 5
5) 7(x+1) = -3(x-4) 7(1/2+1) = -3(1/2-4)
7.x + 7.1= -3.x-3.(-4) 7/2+7 = -3/2 +12
7x + 7 = -3x +12 21/2 = 21/2
7x+3x = 12-7
10x = 5
x = 5:10
x=5/10
x=1/2
la verificacion comprueba q estan bien hechas