\(x+\dfrac{1}{2}=\dfrac{3}{5}\\ x=\dfrac{3}{5}-\dfrac{1}{2}\\ x=\dfrac{1}{10}\)

\(\dfrac{4}{1.3}+\dfrac{4}{3.5}+\dfrac{4}{5.7}+...+\dfrac{4}{99.101}\\ =\dfrac{4}{2}.\left(1-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{5}+\dfrac{1}{5}-\dfrac{1}{7}+...+\dfrac{1}{99}-\dfrac{1}{101}\right)\\ =2.\left(1-\dfrac{1}{101}\right)\\ =2.\dfrac{100}{101}\\ =\dfrac{200}{101}\)

\(\dfrac{-24}{17}-\left(\dfrac{-7}{17}-\dfrac{1}{6}\right)\\ =\dfrac{-24}{17}+\dfrac{7}{17}+\dfrac{1}{6}\\ =-1+\dfrac{1}{6}\\ =\dfrac{-5}{6}\)

\(\dfrac{x-3}{5}=\dfrac{5-2x}{-11}\\ \dfrac{\left(x-3\right).-11}{-55}=\dfrac{\left(5-2x\right).5}{-55}\\ \dfrac{-11x-33}{-55}=\dfrac{25-10x}{-55}\\ -11x-33=25-10x\\ -11x+10x=25-33\\ -x=-8\\ x=8 \)

Diện tích 1 mặt của hình lập phương là:

\(13\times13=169\left(dm^2\right)\)

a,Có 1 quả màu đỏ và 3 quả màu xanh: 1<3

b,Có 5 quả ớt và 4 quả táo: 5>4

\(a,\dfrac{-1}{8}=\dfrac{3}{x}\\ \dfrac{3}{-24}=\dfrac{3}{x}\\ x=-24\\ b,\dfrac{x}{3}=\dfrac{3}{x}\\ x.x=3.3\\ x^2=9\\ x=\pm3\\ c,\dfrac{3}{4}.x=1\dfrac{1}{2}\\ \dfrac{3}{4}.x=\dfrac{3}{2}\\ x=\dfrac{3}{2}:\dfrac{3}{4}\\ x=2\\ d,x-\dfrac{3}{10}=\dfrac{7}{15}:\dfrac{3}{5}\\ x-\dfrac{3}{10}=\dfrac{7}{9}\\ x=\dfrac{7}{9}+\dfrac{3}{10}\\ x=\dfrac{97}{90}\\ e,\dfrac{-4}{7}-x=\dfrac{-8}{3}.\dfrac{3}{7}\\ \dfrac{-4}{7}-x=\dfrac{-8}{7}\\ x=\dfrac{-4}{7}+\dfrac{8}{7}\\ x=\dfrac{4}{7}\\ \)

real có DNA ngược dòng nên mới thua

 2 thành manchester đến anfield bị hạ hết rồi