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Rozwiąż i sprawdź równania :
1) 1/2 (x-3)=9
2)4x-5=2x+11
3) x+3/2 =3
4)3(x-3)=15
5)x-4-(2x+1)= -14
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1) 1/2 *(x-3)=9
x=2*9+3
x=21
2) 4x-5=2x+11
4x=2x+116
2x=16
x=8
3) x+3/2=3
x=3-3/2
x=1 1/2
4) 3*(x-3)=15
x-3=5
x=8
5) x-4-(2x+1)=-14
x-(2x+1)=-10
-x+1=-10
x=9