\(\frac{x-20}{x-10}=\frac{x+40}{x+70}\)
Tìm x biết :
a) \(\frac{x+11}{10}+\frac{x+21}{20}+\frac{x+31}{30}=\frac{x+41}{40}+\frac{x+101}{50}\)
b) \(\frac{x+2}{42}+\frac{x+4}{22}=\frac{x+5}{23}+\frac{x+3}{43}\)
c) \(\frac{x-10}{20}+\frac{x-20}{10}+\frac{x-30}{5}=\frac{x-14}{4}\)
Tìm x, biết: (x-20):(x-10)=(x+40):(x+70)
Tìm x biết:
(x-20)÷(x-10)=(x+40)÷(x+70)
Tìm x biết:
(x - 20) : ( x + 40)= ( x -10) : ( x +70)
Tìm x, biết:
a) (x+15) : x = 4:3
b) (x-20) : (x-10) = (x+40) : (x+70)
Tìm x biết
1) \(\frac{x+15}{x}\)= \(\frac{4}{3}\)
2) \(\frac{7,5-x}{3,5+x}\)= \(\frac{x+40}{x+70}\)
Tìm x, biết :
a) (x + 15) : x = 4:3
b) (7,5 - x) : (3,5 + x) = 5:6
c) (x - 20) : (x - 10) = (x + 40) : (x + 70)
Tìm x biết:
a, (x+15):x =4:3
b, (7,5-x) :(3,5+x)= 5:6
c, (x+20):(x-10)=(x+40):(x+70)
