Question

Bài 1: Tìm x, biết:

a,\(\dfrac{x}{-7}\)= 14249

b, \(\dfrac{2}{x}\)=\(\dfrac{y}{35}\)=\(\dfrac{-36}{84}\)

c, \(\dfrac{4}{x}\)=\(\dfrac{y}{21}\)=\(\dfrac{7}{49}\)=\(\dfrac{52}{91}\)

d,\(\dfrac{7}{x}\)=\(\dfrac{y}{27}\)=\(\dfrac{-42}{54}\)

Answer 1

a) \(\dfrac{x}{-7}=14249\)

⇒ \(x=\dfrac{-14249}{7}\)