Question

HELP ME PLS
. Determina nr necunoscute din ex
3990+(a-115906):85-4000=0

8000:[1020-(443+3420:a):25]-7=1

[1140-(909:a-809)]:130=8
Pls help me dau coronița​

Answer 1

Răspuns:

3990+(a-115906):85-4000=0

(a-115906):85=4000-3990

(a-115906):85=10

(a-115906)=10x85

a-115906=850

a=115906+850

a=116756

8000:[1020-(443+3420:a):25]-7=1

8000:[1020-(443+3420:a):25]=1+7

8000:[1020-(443+3420:a):25]=8

[1020-(443+3420:a):25]=8000:8

1020-(443+3420:a):25=1000

(443+3420:a):25=1020-1000

(443+3420:a):25=20

(443+3420:a)=20x25

443+3420:a=500

3420:a=500-443

3420:a=57

a=3420:57

a=60

[1140-(909:a-809)]:130=8

[1140-(909:a-809)]=8x130

1140-(909:a-809)=1040

(909:a-809)=1140-1040

909:a-809=100

909:a=100+809

909:a=909

a=909:909

a=1