Răspunsuri

2014-03-18T20:21:22+02:00
A=2b/7 si se inlocuieste in fractia ce trebuie calculata
\dfrac{2a+b}{5a+2b}=\dfrac{2\cdot\dfrac{2b}{7}+b}{5\cdot\dfrac{2b}{7}+2b}=\dfrac{\dfrac{11b}{7}}{\dfrac{24b}{7}}=\dfrac{11}{24}
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