if four time a certain number equals nine minus a half of the number

Question

^answer 

Answer 1

Translate English into math: 4x = 9 -(x/2)

Clear fractions: 8x = 18 - x

Add x to each side: 9x = 18

Divide by 9: x = 2

 

Take this answer and plug back into the original problem to make sure it works!