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View the work below from a student last year. What was their mistake? Be detailed in their response. -3(x + 4) = 2x - 5 -3x + 4 = 2x - 5 4 = 5x - 5 9 = 5x 1.8 = x
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5 votes
View the work below from a student last year. What was their mistake? Be detailed in their response.

-3(x + 4) = 2x - 5

-3x + 4 = 2x - 5

4 = 5x - 5

9 = 5x

1.8 = x

User Preetam
by
8.6k points

1 Answer

5 votes
need to distribute -3

-3(x+4)=2x-5
-3x+12=2x-5
-5x=7
x=-7/5 or x=-1 2/5 or x=-1.4
User Darren Meyer
by
8.1k points
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