Question

7x-x=5²¹:5¹⁹3.2²-7⁰

^x=?

Answer 1

bài bạn viết thiếu rồi

Answer 2

7x-x =5²¹: 5¹⁹. 3.2²-7⁰

=>6x =5²¹: 5¹⁹+3.2²-7⁰

=> 6x = 5² + 3.4-1

=> 6x =25+3.2-1

=> 6x = 25+6-1

=> 6x = 30

=> x = 30:6

=> x = 5

Answer 3

Ta có :

7x-x =521: 519. 3.22-70

=>6x =521: 519+3.22-70

=> 6x = 52 + 3.4-1

=> 6x =25+3.2-1

=> 6x = 25+6-1

=> 6x = 30

=> x = 30:6

=> x = 5

Chúc bạn học tốt !

Answer 4

7x-x=5²¹:5¹⁹+3.2²-7⁰

^{\(\Rightarrow\)}6x=5²+3.4-1

\(\Rightarrow\)6x=25+12-1

\(\Rightarrow\)6x=37-1

\(\Rightarrow\)6x=36

\(\Rightarrow\)x=6