Sagot :
A= 11+2(y-6)+4(-3y-6)
= 11+2y-12-12y-24
=-10y-25
B= -2(y-5)-3(7-4y)
= -2y+10-21+13y
= 11y-11
= 11+2y-12-12y-24
=-10y-25
B= -2(y-5)-3(7-4y)
= -2y+10-21+13y
= 11y-11