3/4 . 5/9 + ( 5/2 + 1/2 ) : 2
=3/4 . 5/9 + 3 : 2
=47/36 + 3/2
=101/36
tk cho mk nha
tk thì mk sẽ kb cho
A = \(\frac{3}{4}\)x a + ( b + \(\frac{1}{2}\)) : 2
A = \(\frac{3}{4}x\frac{5}{9}\)+ ( \(\frac{5}{2}+\frac{1}{2}\)) : 2
A = \(\frac{5}{12}\)+ 3 : 2
A = \(\frac{41}{12}\): 2
A = \(\frac{41}{12}x\frac{1}{2}\)
A = \(\frac{41}{24}\)
\(\frac{3}{4}\)x A+( Bx \(\frac{1}{2}\)): 2= \(\frac{3}{4}\)x \(\frac{5}{9}\)+( \(\frac{5}{2}\)x \(\frac{1}{2}\)): 2= \(\frac{5}{12}\)+ \(\frac{5}{4}\): 2= \(\frac{5}{12}\)+ \(\frac{5}{8}\)= \(\frac{25}{24}\).