Select all the expressions that are equivalent to 15 – 5x.

Question

1. 
   
2. –5(x – 3)
3. 
   
4. 3(5 – x)
5. 
   
6. –5(3 – x)
7. 
   
8. –3(–5 + 2x) + x
9. 
   
10. 5(3 – x)

Answer 1

all except the 2nd & 3rd = 15-5x

1st, 4th and 5th all = 15-5x

2nd = 15-3x

3rd = x -15