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x=3
-14x-7=4
-14x=11
x=-11/14
2 = x - (1/3)x
2 = (2/3)x
x=3
b) -7(2x+1)=4
- 14x - 7 = 4
14 x = - 13
x = - (13/14)
c) (3-x)/2 + (x+2)/2 = 1/2
(3-x+x+2)/2 = 1/2
(3/2)/2 = 1/2
3/2 = 1 ===> równanie sprzeczne
x+6=3x
6=2x
x=3
-14x-7=4
-14x=11
x=-11/14
3-x/2+x+2/2=1/2
6+x+2=1
x=-7
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