Sprawdz,ktore pary rownan sa rownowazne:
a)4*(x+2)=8 i 5x-1=-1
b)1/2*(-3)=9 i 4x-10=74
c)4x-5=2x+11 i 3*(x-3)=15
d) x+3/2=3 i x-4-(2x+1)=-14
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a) 4x+8=8 5x=0
4x=0 5x=0
x=0 x=0
tak
b) -3/2x=9 4x=84
-x=6 4x=84
x=-6 x=21
nie
c) 2x=16 3x=24
x=8 x=8
tak
d) x=1.5 -x=-9
x=1.5 x=9
nie