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-3x-2x=8
5x=8/:5
x=1,6
-5x=-70 /:(-5)
x=14
b) 4(x-3) - 3(2x-4) = 2(x-5)
4x - 12 -6x+24=2x-10
4x-6x-2x=-10+12
-4x=2 /:(-4)
x=- 1/2
c) 3(2x-1) - (x+5) = -4(x-2) + (x+2)
6x-3 -x-5=-4x+8+x+2
6x-x+3x=10+8
8x=18 / :8
x=18/8 = 9/2 = 4,5
d) (x+1)(x+4) = x(x+7)
x+1=0
x+4=0
x=0
x+7=0
więc:x=-1 , x=-4,x=0x=-7