a)3a-3= 3(a-1)*
b)4+4x= 4(1+x)*
c)8e-16= 8(e-2)*
d)y-3y= y(1-3)*
e)15a do kwadratu + 12b do kwadratu= 3(5$a^2$+4$b^2$)*
f)24x do kwadratu -16y= 8(3$x^2$-2y)*
g)12 a do kwadratu -8b= 4(3$a^2$-2b)*
h)4x-8y-4z= 4(x-2y-z)*
i)12a do kwadratu + 8m= 4(3$a^2$+2m)*
j) 5a do kwadratu -15b+20z= 5(a^2-3b+4z)*
k)30x+18y-6= 6(5x+3y-1)*
l)36a+12b-6= 6(6a+2b-1)*
m)63m+54n-9= 9(7m+6n-1)*