Răspunsuri

2014-10-31T18:10:54+02:00
Axb=672
(a+10)xb=992
Desfacem paranteza
ab+10b=992
672+10b=992
10b=992-672
10b=320
b=320:10

b=32

ax32=672
a=672:32
a=21
2014-10-31T21:37:12+02:00
Axb=672
(a+10)xb=992
Desfacem paranteza
ab+10b=992
672+10b=992
10b=992-672
10b=320
b=320:10

b=32

ax32=672
a=672:32
a=21