Question

Which expression is NOT equivalent to 6x + (5x + 10)?

Answer 1

To find the answer test all the possible solutions
6x+(5x+10)
= 6x+5x+10
=11x+10

A) 11x+10

B) (6x+10)+5x
= 6x+10+5x
=11x+10

C) 5(x+10)+5x
= 5x+50+5x
= 10x+50, this is not equivalent. 

D) 6x+5(x+10)
= 6x+5x+50
= 11x+50, this is not equivalent either