Question

Answer 1

\(1,\\ a,\Rightarrow\dfrac{71}{33}x=71\\ \Rightarrow x=33\\ b,\Rightarrow\dfrac{1}{3}+\dfrac{19}{45}+x=\dfrac{184}{45}\\ \Rightarrow x=\dfrac{10}{3}\\ 2,\\ 15>14\Rightarrow4,\left(15\right)>4,\left(14\right)\\ 3,\sqrt{63}-\sqrt{27}< \sqrt{64}-\sqrt{4}=8-2=6=\sqrt{36}=\sqrt{63-27}\)

Answer 2

\(B1:2,\left(15\right).x=71\\ \Rightarrow\dfrac{71}{33}.x=71\\ \Rightarrow x=33\\ B2:4,\left(15\right)>4,\left(14\right)\\ B3:\sqrt{63-27}=\sqrt{36}=6\\ \sqrt{63}-\sqrt{27}=3\sqrt{7}-3\sqrt{3}\\ Vì>3\sqrt{7}-3\sqrt{3}\Rightarrow\sqrt{63-27}>\sqrt{63}-\sqrt{27}\)