Giá trị của \(x\) thỏa mãn \(x:\left[ {\left( {1800 + 600} \right):30} \right] = 560:\left( {315 - 35} \right)\) là:

\(1,6\) giờ

\(1,36\) giờ                      

\(1,06\) giờ

\(1,16\) giờ

\(4\)

\(1\)

\(3\)

\(2\)

\(P = \dfrac{5}{2}\) hoặc \(P = \dfrac{9}{4}\)

\(P =  - \dfrac{5}{2}\) hoặc \(P = \dfrac{9}{4}\)

\(P = \dfrac{5}{2}\)

\(P = \dfrac{9}{4}\)

\(P = \dfrac{{2x - 7}}{{x - 3}}\)

\(P = \dfrac{{2x + 5}}{{x - 3}}\)

\(P = \dfrac{{x + 7}}{{x - 3}}\)

\(P = \dfrac{{x - 5}}{{x - 3}}\)

\(P = \dfrac{{2x - 7}}{{x - 3}}\)

\(P = \dfrac{{2x + 5}}{{x - 3}}\)

\(P = \dfrac{{x + 7}}{{x - 3}}\)

\(P = \dfrac{{x - 5}}{{x - 3}}\)

\(25\)

\(30\)                     

\(40\)

\(50\)

\(\dfrac{3}{4}\)

\(\dfrac{2}{5}\)

\(\dfrac{3}{2}\)

\(\dfrac{2}{3}\)