Question

Cine ma ajuta cu 12.a)

Answer 1

=11(1+2+...+9):(64-9)-8=[(11*9*10)/2]:55-8=495:55-8=9-8=1

Answer 2

(11+22+ ... + 99):(8²-3²) - 2³ =
=11(1+2+ ... +9) : (64 - 9) - 8 =
=11*(9*10/2) : 55 - 8 =
= 55 * 9 : 55 - 8 =
= 9 - 8 = 1 .