Question

rezolvati repede ex 6

Answer 1

$a) ac+bc=c(a+b)=3*15=45 \\ b)ca-cb=c(a-b)=30*27=810 \\ c)xy+xz=x(y+z)=5(y+z)=126 \\ y+z=126/5 \\ y+z=25,2 \\ d)xy-xz=x(y-z)=5(y-z)=625 \\ y-z=625/5 \\ y-z=125 \\ e)mn+mp=m(n+p)=m*10=450 \\ m=45 \\ f)nm-pm=m(n-p)=m*16=320 \\ m=20$