Two times a number added to -3, subtracted from twice the sum of nine times the number and 8

Question

Convert the following phrase into a mathematical expression. Use x as the variable, and combine like terms.

Answer 1

Two times a number = 2x

 

 

added to -3

 

= 2x + (-3)  

 

subtracted from twice the sum of nine times the number and 8

 

2(9x + 8) - (2x - 3)

 

Combining like terms

 

18x + 16 - 2x + 3

 

16x + 19