Question

aflati 3 nr a caror media aritmetica este 30

Answer 1

(30+30+30):3=
90:3+30    sper ca team ajutat

Answer 2

$\frac{a+a+1+a+2}{3} =30=\ \textgreater \ a+a+1+a+2=90=\ \textgreater \ 3a+3=90=\ \textgreater \ \\ 3a=87=\ \textgreater \ a=29 \\ b=29+1=30 \\ c=29+2=31$