3+x4=10 7+9x=21 9+x=21 y=x y+x=21
its 10.5 because you said y=x and y+x=21 so 21/2 =10.5 and 10.5 +10.5=21
mate your wrong
I like your answer, your logic is good :)
The question really does not make sense so that is probably why anon thinks you are wrong
