Question

Afla numarul necunoscut, folosind metoda mersului invers.

A+22.832+654=45.400
32.574+b+9.345=52.432
c-34.243+22.222-13.432=28.805
9.572-d+12.200-8.324=5.000

Answer 1

a + 22832 +654=45400
a+22832= 45400-654
a+22832= 44746
a= 44746 -22832
a= 21,914

32574+b + 9345 = 52432
32574+ b = 52432-9345
32574+b = 43087
b = 43087 - 32574
b= 10,513

c - 34243 +22222-13432=28805
c - 34243 + 22222 = 28805 +13432
c - 34243 + 22222 = 42237
c- 34243 = 42237-22222
c- 34243= 20015
c = 20015+ 34243
c= 362,458

9.572-d+12.200-8.324=5.000

9573-d + 12200 = 5000+8324
9573-d +12200 = 13324
9573 -d= 13324-12200
9573-d= 1124
d=9573-1124
d= 8,449