rozwiąż równania:
A)-9x(x+8)=9x+8
B)0,25x+0,4=0,35
C)2x-3=1/2+x
D) 5(2x-3)-6x=3(4x-3)
E)4x-7=2x+3
F)-2(x+4)=2x-6
G)7-1,1x=0,4-2,2x
H)x+2+x-3=1
I) 2(3-2x)-3=3(x-1)-1
J)-x+4=-3+1
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a) -9x(x+8)= 9x+8
-9x^2-72x=9x+8
-9x^2-72x=8
b)0,25x+0,4=0,35
0,25x=-0,05
x=-0,2
c)2x-3=1/2+x
x=3+1/2
d)5(2x-3)-6x=3(4x-3)
10x-15-6x=12x-9
-8x=6
x=-6/8
e)4x-7=2x+3
2x=10
x=5
f)-2(x+4)=2x-6
-2x-8=2x-6
-4x=2
x=-1/2
g) 7-1,1x=0,4-2,2x
1,1x=-6,6
x=6
h)x+2+x-3=1
2x=2
x=1
i)2(3-2x)-3=3(x-1)-1
6-4x-3=3x-3-1
-7x=-7
x=1
j)-x+4=-3+1
-x=-6
x=6