Question

fie a pe b =2 pe 3 aflati valoarea expresiei a+5b num 2a-b

Answer 1

$\frac{a}{b}=\frac{2}{3}\\3a=2b\\a=2k\\b=3k\\a+5b=2k+3k*5=2k+15k=17k \\2a-b=2k*2-3k=4k-3k=k$