dễ thôi mà \(\frac{3}{10}x=\frac{9}{4}y\Rightarrow\)\(\frac{9}{30}x=\frac{9}{4}y\)
\(\Rightarrow4x=30y\)(x là 30 phần ; y là 4 phần)
Áp dụng lại dạng toán tổng-hiệu của lớp 4
Hiệu số phần bằng nhau là :
30 - 4 = 26 (phần)
Vậy x =
\(\frac{13}{26}\cdot30=\frac{1}{2}\cdot30=15\)
Find the value of x such that x-y=13; 3/10x=9/4y
x=?
Find the smallest value of x such that: 2x+3>5
Find the value of x such that:\(\frac{3}{2x+7}=\frac{5}{3x+9}\)
Find the values of x and y such that 3x=5y and 2x-3y=5 .
Answer: The value of x and y are ............., respectively.
(used ";" between the numbers)
Find the smallest integer value of x such that: 2x+3>5
find the value of x such that x/2=x+2/3
Tìm giá trị của x sao cho x/2=x+x/3
Find the value of x such that\(\frac{3}{x-2}=\frac{2}{x-3}\)
Find the value of x such that: \(\frac{5}{7-2x}=\frac{3}{x-3}\)
Find the value of x such that \(\frac{x-7}{6}+\frac{x-11}{10}=\frac{x-8}{7}+\frac{x-10}{9}\)
.
Answer: .x=..
