d) 1/10 x )+ 1/2 = 1/2 x -2 e) 3(x-2) = 3x-20 f) 4(x-3 ) = 4x-12
d)1/10x + 1/2 = 1/2x - 2
1/10x + 1/2 = 5/10x-2 /-1/10x
1/2 = 4/10x - 2 /+2
2 i 5/10 = 4/10x/ 4/10x= 6,25
e)
3(x-2) = 3x - 203x - 6 = 3x - 20 / - 3x
-6 = -20
równanie sprzeczne !!!
f)
4(x-3) = 4x-12
4x - 12 = 4x - 12
równanie tożsamościowe !!!
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d)
1/10x + 1/2 = 1/2x - 2
1/10x + 1/2 = 5/10x-2 /-1/10x
1/2 = 4/10x - 2 /+2
2 i 5/10 = 4/10x/ 4/10
x= 6,25
e)
3(x-2) = 3x - 20
3x - 6 = 3x - 20 / - 3x
-6 = -20
równanie sprzeczne !!!
f)
4(x-3) = 4x-12
4x - 12 = 4x - 12
równanie tożsamościowe !!!