Question

c = 3/4 x a + (b - 1/2) : 2 

với a = 5/9 , b = 5/2

tính

 

Answer 1

Nếu a = \(\dfrac{5}{9}\) ; b = \(\dfrac{5}{2}\) 

C = \(\dfrac{3}{4}\) x a + (b - \(\dfrac{1}{2}\) ) : 2 = \(\dfrac{3}{4}\) x \(\dfrac{5}{9}\) + (\(\dfrac{5}{2}\) - \(\dfrac{1}{2}\)) : 2 

                                      = \(\dfrac{5}{12}\) + 2 : 2

                                      = \(\dfrac{5}{12}\)  + 1

                                      = \(\dfrac{5}{12}\)