Question

Aralătați că dacă 10 | 7a+6b,atunci 10 | 3a+4b

Answer 1

[tex]\it 10|7a+6b\ \ \ \ (1) [/tex]

$\it Dar,\ 10|10+10b\ \ \ \ (2)$


$\it (1), (2) \Longrightarrow 10|10a+10b - (7a + 6b)\Longrightarrow 10|10a+10b - 7a - 6b$


$\it\Longrightarrow 10|3a+4b$