Răspuns:
a=27:3=9
a=63:9=7
a=48:8=6
x= 42:7=6
a=50:5=10
a=8:8=1
7*a=56 => a=56:7= 8
9*a=36 => a=36:9 = 4
a*0=0 => a=0
a*25=25 => a= 25:25=1
8*a=40 => a= 40:8=5
a*6=24 =>a=24:6= 4
9*a=>81 => a=81:9=9
3* a*2=54 => 3*a=54:2= 27 => 3*a= 27 => a= 27:3=9
a*a*8=32
a*a= 32:8=> 4 => 2*2=4
coroana?