a) 4x-3=3x+5 4x-3x=5+3 x=8 b) 5x+2=7-3x 5x+3x=7-2 8x=5 /:8 x=5/8 c) 3(x-1)=0 3x-3=0 3x=3 /:3 x=1 d) -6(x+1)=24 -6x-6=24 -6x=24+6 -6x=30 /:(-6) x = -5 e) -7(x-2)=3x-1 -7x+14=3x-1 -7x-3x=-1-14 -10x=-15 /:(-10) x=15/10 x=1 5/10 x=1 1/2 f) 4(x-1)=6(1+x) 4x-4=6+6x 4x-6x=6+4 -2x=10 /:(-2) x=-5 Pozdrawiam. ( :
a) 4x-3 = 3x+5 4x-3x = 5+3 x = 8 b) 5x+2 = 7-3x 5x+3x = 7-2 8x = 5 |:8 x = 0,625 c) 3(x-1) = 0 3x-3 = 0 3x = 3 |:3 x = 1 d) -6(x+1) = 24 -6x-6 = 24 -6x = 24+6 -6x = 30 |:(-6) x = -5 e) -7(x-2) = 3x-1 -7x+14 = 3x-1 -7x-3x = -1-14 -10x = -15 |:(-10) x = 1,5 f) 4(x-1) = 6(1+x) 4x-4 = 6+6x 4x-6x = 6+4 -2x = 10 |:(-2) x = -5
4X-3=3X+5 2=x 5x+2=7-3x 2x=9 / : 2 x=4,5 3(x-1)=0 3x-3=0 3x=3/:3 x=1 -6(x+1)=24 -6x-6=24 -6x=18/:6 -x=3 e)-7(x-2)=3x-1 -7x+14=3x-1 -4x=13/:4 -x=3,25 4(x-1)=6(1+x) 4x-4=6+6x -2x=-2 /:2 -x=1