Question

Составь выражения по схемам. Вычисли их значения. ( @ = пустая клетка ) даю 20 баллов!!!!!!!
@ - @ : @ = @
@ * @ + @ = @
@ + ( @ * @ ) : @ = @
@ - @ * @ + @ = @

Answer 1

50 - 10 : 2 = 45

5 * 5 + 10 = 35

15 + ( 4 * 5 ) : 2 = 25

100 - 10 * 10 + 50 = 50