Question

Tìm x, biết:

\(6x+x=5^{11}\div5^9+3^1\)

 

 

Answer 1

6x+x=5¹¹:5⁹+3¹

7x=25+3

7x=28

x=28/7

x=4

Answer 2

\(\Rightarrow7x=5^{11-9}+3\)

\(\Rightarrow7x=5^2+3\)

\(\Rightarrow7x=28\)

\(\Rightarrow x=\frac{28}{7}\)

Answer 3

6x+x=5¹¹:5⁹+3¹

6x+x=5²+3

6x+x=25+3

6x+x=28

x+x=28:6

2x=14/3

x=7/3 

Answer 4

\(6x+x=5^{11}:5^9+3^1\)

           \(7x=28\)

              \(x=28:7\)

               \(x=4\)

Vậy x = 4