Question

Tìm x

A) 2.x-2³.3²=138

B) (6.x-3⁴).7³⁼3.7²

Answer 1

a) \(2x-2^3.3^2=138\)

\(\Rightarrow2x=138+2^3.3^2\)

\(\Rightarrow2x=210\)

\(\Rightarrow x=105\)

Vậy x = 105.

Answer 2

a)2x-96=138

2x=174

x=87

b)(6x-81).343=147

2058x-27783=147

2058x=27930

x=13,57