Question

{[(2·3+$2^{2}$·3·5) :11+40:5+$1987^{0}$]:(3·5)+$2^{3}$·$3^{2}$}:(3·5)= Caculeaza

Answer 1

={[(6+4·15):11+8+1]:15+8·9}:15=
={[(6+60):11+9]:15+72}:15
={[66:11+9]:15+72}:15
=[(6+9):15+72]:15
=(15:15+72):15
=(1+72):15
=73:15=4,8(6)

Answer 2

{[(2·3+2²·3·5):11+40:5+1987^0]:(3·5)+2³·3²}:(3·5)=
{[(6+60):11+8+1]:15+8·9}:15=
[(66:11+8+1):15+72]:15=
[(6+8+1):15+72]:15=
(15:15+72):15=
73:15=4.86666666667