Question

31 va rog dau coroana nu răspunde-ți prosti va rog.Multumesc ​

Answer 1

uităte atent pe poză, eu zic că e corect..

Answer 2

Răspuns:

$\left \{ {{2a+3b=48} \atop {\frac{a}{3}=\frac{b}{2}}} \right. < = > \left \{ {{2a+3b=48} \atop {a=\frac{3}{2}}b} \right. < = > \left \{ {{\not2\times\frac{3}{\not2}b+3b=48} \atop {a=\frac{3}{2}}b}} \right. < = >$

$< = > \left \{ {{3b+3b=48} \atop {a=\frac{3}{2}}b}} \right.\\ < = > \left \{ {{6b=48\:\:|:6} \atop {a=\frac{3}{2}}b}} \right. < = > \left \{ {{b=8} \atop {a=\frac{3}{2}}b}} \right. < = > \left \{ {{b=8} \atop {a=\frac{3}{\not2}}\times\not8} \right. < = > \left \{ {{b=8} \atop {a=3\times4}} \right. < = > \left \{ {{b=8} \atop {a=12}} \right.$