Question

es 3 si 6! va roog! dau coroana+ 20 puncte

Answer 1

3)

a+b=29

 a
--- = 4 rest 4 adica a=4b+4
 b

a+b=29
(4b+4)+b=29 => 5b=29-4 => 5b=25 => b=5
a=29-b=29-5=24

a-b=24-5=19

5)

c1+c2=40 
c1-10=c2+10 => c1=c2+20

(c2+20)+c2=40 => 2c2=20 => c2=10
c1+c2=40 => c1+10=40 => c1=30