Question

afla produsul a trei numere stiind ca:a+b=28,b+c=32si a+c=30

Answer 1

raspunsul a 13 b 11 c 17

Answer 2

a+b+b+c+a+c=28+32+30=90
2a+2b+2c=90
a+b+c=45
28+c=45
c=45-28
c=17

b+c=30
b+17=30
b=32-17
b=15

a+b=28
a+15=28
a=28-15
a=13.

axbxc=17x15x13=255x13=3315. :)