Rozwiąż RÓWNANIA: 18 pkt.
a) -7(x+2)+4=-3x
b)1- 2x+5 Przez 3 =4
c)-4( ½x-4)-4=2(-x+2)
d)2x(x-1)=2(x-1)(x+3)
-7x -14+4=-3x
-7x-10=-3x
-4x=10
x=-2½
b)1- (2x+5 )/3 =4 |*3
3-2x-5=12
-2-2x=12
-2x=14
x=-7
-2x+16-4=-2x+4
-2x+12 =-2x+4
12=4
sprzeczne
2x²-2x=2(x²+3x-x-3)
2x²-2x=2(x²+2x-3)
2x²-2x=2x²+2x-3
-2x=2x-3
-4x=-3
x=¾
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a) -7(x+2)+4=-3x
-7x -14+4=-3x
-7x-10=-3x
-4x=10
x=-2½
b)1- (2x+5 )/3 =4 |*3
3-2x-5=12
-2-2x=12
-2x=14
x=-7
c)-4( ½x-4)-4=2(-x+2)
-2x+16-4=-2x+4
-2x+12 =-2x+4
12=4
sprzeczne
d)2x(x-1)=2(x-1)(x+3)
2x²-2x=2(x²+3x-x-3)
2x²-2x=2(x²+2x-3)
2x²-2x=2x²+2x-3
-2x=2x-3
-4x=-3
x=¾