a = ( 73×9-318-777÷3)+796-63×10
a = ( 657-318-259)+796-63×10
a = ( 339-259)+796-63×10
a = 80+796-63×10
a = 80+796-630
a = 876-630
a = 246
b = 6-5÷[4-3÷(2-2:b)]=1 ( vom folosi mersul invers)
b= 5÷[4-3÷(2-2÷b)]= 1+6
b=4-3÷2-2÷b= 7×5
b=3÷2-2÷b= 35+ 4
b=2-2÷b= 39×3
b=2÷b = 117
b=b= 117÷2
b=b=58,5
246 + 58,5 = 304,5
Succes! :)