Question 1059709
let x represent the number.


6 times the number is 6x.


7 times the number is 7x.


6 times the number plus 7 times the number is equal to 6x + 7x which is equal to 13x.


for example:


let x = 15


6x = 6 * 15 = 90


7x = 7 * 15 = 105


6x + 7x = 6 * 15 + 7 * 15 = 90 + 105 = 195