Odpowiedzi

2010-03-26T23:05:19+01:00
A) 4(x+3) 8(y+4)=4x+12*8y+32=4x+44*8y
b)5(-2a+b) -4(5y-z)=-10a+5b*-20y-4z
c)0,2(10x-y)*0,8=2x-2y*0,8
d)-
e)-
f)1/5(10x+2,5)-0,4=0,21
g)1/3(3y-2,7)=3y-2,7/:2,7 y=1 1/3