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Find the error. 3x-4=7x+12 4x-4=12 4x=16 x=4

Find the error. 3x-4=7x+12 4x-4=12 4x=16 x=4
asked 94.1k views
3 votes
Find the error.
3x-4=7x+12
4x-4=12
4x=16
x=4

asked
User Nyra
by
8.0k points

2 Answers

5 votes
The 4 shouldn’t be a negative
answered
User Kingofzeal
by
7.9k points
4 votes

Explanation:

Subtracting 7x from 3x should give -4x, not 4x, so the answer should be:


- 4x - 4 = 12


- 4x = 16


x = - 4

answered
User BobV
by
8.5k points
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