Question

Dau coroana varog repede​

Answer 1

Răspuns:

x + 624 < 629

x < 629 - 624

x < 5

x = { 0,1,2,3,4}

x-401 < 5

x < 407

x={0,1,2,3,....,405,406}

=>x ={0,1,2,3,4}

Answer 2

Răspuns:

a+624=629-1

a+624=628=>a=628-624=>a=4

a+624=629-2=>a=627-624=>a=3

a+624=692-3=>a=2

a+624=692-4=>a=1

a+624=692-5=>a=0

a=0,1,2,3,4

________

a-401=0=>a=401

a-401=1=>a=401+1=>a=402

a-401=2=>a=401+2=>a=403

a-401=3=>a=401+3=>a=404

a-401=4=>a=401+4=>a=405

a=401,402,403,404,405