1. Tính ( hợp lý nếu có thể )
a, A dfrac{7,5-0,6+dfrac{3}{7}+dfrac{3}{13}}{2,75-2,2+dfrac{11}{7}+dfrac{11}{3}}
b, B 26 : left[dfrac{3:left(0,2-0,1right)}{2,5.left(0,8+1,2right)}+dfrac{left(34,06-33,81right).4}{6.84:left(28,57-25,15right)}right]+ dfrac{2}{3} : dfrac{4}{21}
c, C left[left(dfrac{2}{193}-dfrac{3}{386}right).dfrac{193}{17}+dfrac{33}{34}right] : left[left(dfrac{7}{2001}+dfrac{11}{4002}right).dfrac{2001}{25}+dfrac{9}{2}right]
d, D dfrac{0.8:left(dfrac{4}{5}.1,25right)}{0.64-df...
Đọc tiếp
1. Tính ( hợp lý nếu có thể )
a, A = \(\dfrac{7,5-0,6+\dfrac{3}{7}+\dfrac{3}{13}}{2,75-2,2+\dfrac{11}{7}+\dfrac{11}{3}}\)
b, B = 26 : \(\left[\dfrac{3:\left(0,2-0,1\right)}{2,5.\left(0,8+1,2\right)}+\dfrac{\left(34,06-33,81\right).4}{6.84:\left(28,57-25,15\right)}\right]\)+ \(\dfrac{2}{3}\) : \(\dfrac{4}{21}\)
c, C = \(\left[\left(\dfrac{2}{193}-\dfrac{3}{386}\right).\dfrac{193}{17}+\dfrac{33}{34}\right]\) : \(\left[\left(\dfrac{7}{2001}+\dfrac{11}{4002}\right).\dfrac{2001}{25}+\dfrac{9}{2}\right]\)
d, D = \(\dfrac{0.8:\left(\dfrac{4}{5}.1,25\right)}{0.64-\dfrac{1}{25}}\) + \(\dfrac{\left(1.08-\dfrac{5}{25}\right):\dfrac{4}{7}}{\left(6\dfrac{5}{9}-3\dfrac{1}{4}\right).2\dfrac{2}{7}}\) + ( 11,2 . 0,5 ) : \(\dfrac{4}{5}\)
Giúp mk nha chỉ là tính toán thông thường tính ra là đc nhưng mà mk lại khó tính ra nên các bn giúp mk nha
