a, \(51:\dfrac{3}{7}=119\)

b, \(-33:\dfrac{11}{12}=-36\)

c, \(7,2:\dfrac{4}{5}=9\)

d, \(36:\dfrac{24}{100}=150\)

There is a big wardrobe in my sister's bedroom.

\(3636:\left(12.x-91\right)=36\)

\(\left(12.x-91\right)=3636:36\)

\(\left(12.x-91\right)=101\)

\(\left(12.x\right)=101+91\)

\(\left(12.x\right)=192\)

\(x=192:12\)

\(x=16\)

Vậy x = 16

\(2.3^x=162\)

\(3^x=162:2\)

\(3^x=81\)

\(3^4=81\)

Vậy x = 4

\(2^x.2^4=128\)

\(2^x.2^4=2^7\)

\(x+4=7\)

\(x=7-4\)

\(x=3\)

Vậy \(x=3\)

C

a, 335

b, 792

c, 9630

14 ngày