We are asked to get the algebraic expression of the given phrase "twelve times the sum of a number and seven-tenths". The solution is shown below:
Let start with the phrase "number and seven-tenths", We need to assign "x" to represent the unknown number such that the phrase equals to "x+ 7/10".
To complete the algebraic expression of the phrase "twelve times the sum of a number and seven-tenths", we have:
12(x+7/10)
The answer is 12(x + 7/10).