Question

5 0 0 - (x + 1 3 8)
(x + 1 3 8) + 5 9 = 70​

Answer 1

Răspuns:

500 - ( x + 138) + 59 = 70

500 - ( x + 138) = 70 - 59

500 - ( x + 138) = 11

x + 138 = 500 - 11

x + 138 = 489

x = 489 - 138

x = 351 numărul, aflat prin metoda mersului invers