352,218 views
8 votes
8 votes
William solved the equation 5 + 14a = 9a - 5, but he is not sure he solved it correctly. His work is shown below. Did he solve it correctly? If not, on which step did William make his first mistake?

Step 1: 5+ 4a = 94 - 5
Step 2. 5+ 5a=.5
Step 3: 5a = 0
Step 4: a=0

A.Step 3
B. Step 2
C. Step 1
D. Step 4
E. William did not make a mistake. ​

User Jackytse
by
2.7k points

2 Answers

17 votes
17 votes

Answer:

Yes it looks correct but that is just me

Explanation:

User Nogood
by
2.8k points
9 votes
9 votes

Answer:

C

Explanation:

This is the correct solution.

5 + 14a = 9a -5

14a - 9a = -5 -5

5a = -10

a=-10/5 = -2

Therefore, a = -2

User Mads Skjern
by
3.4k points
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