Question

Daca ab+ac=207 si b+c=23 Atunci a...

Answer 1

$b+c=23\\ab+ac=207\\a(b+c)=207\\a\cdot23=207\\a=\frac{207}{23}\\a=9$

Answer 2

ab+ac=207
b+c=23
a(b+c)=207
ax23=207
a=207:23
a=9
V: 9x23=207