Question

решите уровнения.
1)5000+300+x+4=5324
2)60000+x+600+70+1=63671
3)x+400+80+9=7489

Answer 1

5304+x=5324
x=5324-5304
x=20

60671+x=63671
x=63671-60671
x=3000

489+x=7489
x=7489-489
x=7000