rozwiąż równania:
a) -(2x-1)=4
b) 2(x+1)=x
c) 2x-(3x+1)=6
d) -(4+x)=2(3-x)
e) 3(y+6)-y=2(y=9)
f) (x-7)-2(3x+5)=5
a) -2x+1 =4
-2x=3/(-2)
x=-3/2
x=-1,5
b)2x+2=x
x=-2
c)2x-3x-1=6
-1x=7/:(-1)
x=-7
d)-4-x=6-2x
-x+2x=10
x=10
e)3y+18-y=2y-18
0=0
f)x-7-6x-10=5
-5x=22/:(-5)
x=4 i 2/5
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a) -2x+1 =4
-2x=3/(-2)
x=-3/2
x=-1,5
b)2x+2=x
x=-2
c)2x-3x-1=6
-1x=7/:(-1)
x=-7
d)-4-x=6-2x
-x+2x=10
x=10
e)3y+18-y=2y-18
0=0
f)x-7-6x-10=5
-5x=22/:(-5)
x=4 i 2/5