Question 948613
your equation is:


8/3x^5 = ?/3x^7 


cross multiply to get 8 * 3x^7 = ? * 3x^5


divide both sides of the equation by 3x^5 to get:


(8 * 3x^7) / (3x^5) = ?


simplify to get 8 * x^2 = ?


that' your answer.


? = 8x^2


your equation becomes:


8 * 3x^7 = 8x^2 * 3x^5


8 * 3x^7 is equal to 24x^7


8x^2 * 3x^5 is equal to 24x^7


both sides of the equation are equal to each other confirming that ? = 8x^2


note that 8 * 3x^7 / 3x^5 is equal to 8 * 3/3 * x^7/x^5 which is equal to 8 * 1 * x^(7-5) which is equal to 8 * x^2 which is equal to 8x^2.


note also that 8x^2 * 3x^5 is equal to 8 * 3 * x^2 * x^5 which is equal to 24 * x^(2+5) which is equal to 24 * x^7 which is equal to 24x^7.