x - 3/10 = 7/15 : 3/5
x - 3/10 = 7/9
x = 7/9 + 3/10
x = 97/90
Chúc bạn học tốt!! ^^
\(x-\dfrac{3}{10}=\dfrac{35}{45}\\ x=\dfrac{35}{45}+\dfrac{3}{10}\\ x=\dfrac{7}{9}+\dfrac{3}{10}\\ x=\dfrac{70}{90}+\dfrac{27}{90}\\ x=\dfrac{97}{90}\)
\(x-\dfrac{3}{10}=\dfrac{7}{15}\div\dfrac{3}{5}\)
\(\Rightarrow x-\dfrac{3}{10}=\dfrac{7}{15}\times\dfrac{5}{3}\)
\(\Rightarrow x-\dfrac{3}{10}=\dfrac{7\times5}{3\times5\times3}\)
\(\Rightarrow x-\dfrac{3}{10}=\dfrac{7}{9}\)
\(\Rightarrow x=\dfrac{7}{9}+\dfrac{3}{10}\)
\(\Rightarrow x=\dfrac{70}{90}+\dfrac{27}{90}\)
\(\Rightarrow x=\dfrac{97}{90}\)
Vậy \(x=\dfrac{97}{90}\)
\(\dfrac{7}{3}-\dfrac{1}{3}:x=\dfrac{11}{6}\)
x - 3/10 = 7/15 : 3/5
x - 3/10 = 7/9
x = 7/9 + 3/10
x = 97/90
ai chơi free fire ko?
