Question

Tìm x, biết:

a) 0,01: 2,5 = (0,75x) : 0,75

b) 1\(\frac{1}{3}\) : 0,8 = \(\frac{2}{3}\) : (0,1x)

c) x : (-2,14) = -3,12 : 1,2

d) 2\(\frac{2}{3}\) : x = 2\(\frac{1}{12}\) : (-0,06)

Answer 1

c) \(x:\left(-2,14\right)=\left(-3,12\right):1,2\)

=> \(x:\left(-2,14\right)=-2,6\)

=> \(x=\left(-2,6\right).\left(-2,14\right)\)

=> \(x=5,564\)

Vậy \(x=5,564.\)

d) \(2\frac{2}{3}:x=2\frac{1}{2}:\left(-0,06\right)\)

=> \(\frac{8}{3}:x=\frac{25}{12}:\left(-\frac{3}{50}\right)\)

=> \(\frac{8}{3}:x=-\frac{625}{18}\)

=> \(x=\frac{8}{3}:\left(-\frac{625}{18}\right)\)

=> \(x=-\frac{48}{625}\)

Vậy \(x=-\frac{48}{625}.\)

Chúc bạn học tốt!