zad.10 str.103 Podręcznik matematyka z plusem podpunkt d,e,f
Tylko nie same wyniki ;)
d) x+y/2 - x/3 = 4
x-y/2 + y/3 = -3
e) 3x-1/5 + 2y-3/4=3(y+1)
x+y/4- 3y-1/2=x-6y/4
f) 3x-2/3 - 2x+y/6=x+1/6
x+y - (-x+y/5) = 1/5 - 0,8x
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