a) 3(x-5) + x = 2 - x
3x -15 + x = 2 - x
5x = 17
x = 17/5
b) (x+2)/3 + x = 3 - 2x / *3
x+2 +3x = 9 - 6x
4x + 6x = 9 - 2
10x = 7
x = 7/10
c) 4 - (2x - 5)/2 = 3 -x /*2
8 - 2x + 5 = 6 -2x
-2x + 2x = 6 - 5 - 8
0 = -7
sprzeczne
a). 3(x-5)+x=2-x
3x-15+×=2-x
4x+x=2+15
5x=17
x=17/5=3 2/5= 3,4
b).(x+2)/3 + x= 3-2x |*3
3((x+2)/3 + x)= 3(3-2x)
(x+2)+ 3x= 9-6x
x+3x+6x=9-2
10x=7
x=7/10
c).
4-(2x-5)/2=3-x |*2
2(4-(2x-5)/2)=2(3-x)
8-(2x-5)=6-2x
8-2x+5=6-2x
13=6
0=-7 <--równanie sprzeczne
