Ok i may be dense but i don't ge tthe formula cause when i work out
3 �} �ã(9-4(1)(-12))/2
I get 60 not 57, and i don't understand how you got 9 or 4 either
3 �} �ã(9-4(1)(-12))/2
I get 60 not 57, and i don't understand how you got 9 or 4 either