Răspuns :
[tex]5-[a+6*(a:2+3)]:10=0 \\ 5=(a+3a+18):10 \\ 50=4a+18 \\ 32=4a \\ a=8[/tex]
5-[a+6*(a:2+3)]:10=0
[a+6*(a:2+3)] :10=5
[a+6*(a:2+3)]=50
(a+3a+18)=50
4a+18=50
4a=50-18
4a=32
a=32:4
a=8
[a+6*(a:2+3)] :10=5
[a+6*(a:2+3)]=50
(a+3a+18)=50
4a+18=50
4a=50-18
4a=32
a=32:4
a=8