ela i jola są blizniakami ile ma lat kasia
jola jest o 8 lat starsza a ela 3 razy
obliczenia fast
ela-3*x
jola-x+8
kasia-x
kasia:
3x+(x+8) = x
3x-x-x= -8
1x= (-8) /: 1
x=8
jak to mialo byc z ,,x'' to chyba dobrze
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ela-3*x
jola-x+8
kasia-x
kasia:
3x+(x+8) = x
3x-x-x= -8
1x= (-8) /: 1
x=8
jak to mialo byc z ,,x'' to chyba dobrze