Question

7x-x=5^21:5^19+3.2^2-7^0

Answer 1

7x-x=5²¹:5¹⁹+3.2²-7⁰

=>x.(7-1)=5³+3.4-1

=>6x=125+12-1

=>6x=136

=>x=68/3

Answer 2

7x - x = 5²¹ : 5¹⁹ + 3. 2² - 7⁰

(7-1)x=5² + 3. 4 - 1

6x      = 25 + 12 - 1

6x      = 36

  x      = 6

Answer 3

\(7x-x=5^{21}:5^{19}+3.2^2-7^0\)

\(\Rightarrow7x-x=5^2+3.4-1\)

\(\Rightarrow7x-x=25+12-1\)

\(\Rightarrow7x-x=37-1\)

\(\Rightarrow7x-x=36\)

\(6x=36\)

\(\Rightarrow x=6\)