Question

daca  2a +7 supra 3b+2 egal 7 supra 2, atunci a supra b egal ????

Answer 1

$\frac{2a+7}{3b+2} = \frac{7}{2} \\ \\ 2(2a+7)=7(3b+2) \\ 4a+14=21b+14 \\ 4a+14-14=21b=\ \textgreater \ 4a=21b=\ \textgreater \ \frac{a}{b} = \frac{21}{4}$