Rozwiąż równania: a)3(x+8)=x-10 b)2(x-2)=-x-10 c)-(x+8)=-x+20
a) 3(x+8)=x-10
3x + 24 = x - 10
3x - x = -10 - 24
2x = -34 /:2
x = -17
b) 2(x-2)=-x-10
2x - 4 = -x - 10
2x + x = -10 + 4
3x = -6 /:3
x = -2
c) -(x+8)=-x+20
-x - 8 = -x + 20
-x + x = 20 + 8
0 = 28 równanie sprzeczne.
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a) 3(x+8)=x-10
3x + 24 = x - 10
3x - x = -10 - 24
2x = -34 /:2
x = -17
b) 2(x-2)=-x-10
2x - 4 = -x - 10
2x + x = -10 + 4
3x = -6 /:3
x = -2
c) -(x+8)=-x+20
-x - 8 = -x + 20
-x + x = 20 + 8
0 = 28 równanie sprzeczne.