Question

2. Aflaţi numărul necunoscut a:
a +(11000 - 1000) = 217000
(285402-53100) - a=112101
a
- (111904 +111005) =123000
(240104 + 510250)- a=340144​

Answer 1

Răspuns:

a+(11000-1000)=217000

a+10000=217000

a=217000-10000

a=207000

(285402-53100)-a=112101

232300-a=112101

a=232300-112101

a=120199

a-(111904+111005)=123000

a-899=123000

a=123000+899

a=123899

(240104+510250)-a=340144

750354-a=340144

a=750354-340144

a=410210