Complete the Next Step: A partial solution to the equation 5(2x + 3) = 85 is given below. Choose the step that is missing from the solution.
5(2x + 3) = 85

10x = 70
x = 7

10x + 3 = 85

2x + 15 = 85

10x + 15 = 17

10x + 15 = 85

Question

Complete the Next Step: A partial solution to the equation 5(2x + 3) = 85 is given below. Choose the step that is missing from the solution.
5(2x + 3) = 85
 

10x = 70
x = 7 

 10x + 3 = 85 

 2x + 15 = 85 

 10x + 15 = 17 

 10x + 15 = 85

anonymous · Answer

wow who wrote this mess?

anonymous · Answer

D - through distribution.

anonymous · Answer

5(2x) = 10x
5(3) = 15
Thus
10x + 15 = 85

anonymous · Answer

i guess D, but that is a rather silly method
easier to divide both sides by 5 and get $2x+3=17$

anonymous · Answer

@satellite73  they're probably practicing distribution.

anonymous · Answer

But yeah, dividing by 5 would've been simpler.  Take care!