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Mai solved the equation below incorrectly. Identify Mai's error. 5 points 3(x + 4) - 10 = 1/10 (4x + 16) 3x + 12 - 10 = 2x + 8 3x + 2 = 2x + 8 5x + 2 = 8 5x = 6 X = 6/5

Mai solved the equation below incorrectly. Identify Mai's error. 5 points 3(x + 4) - 10 = 1/10 (4x + 16) 3x + 12 - 10 = 2x + 8 3x + 2 = 2x + 8 5x + 2 = 8 5x = 6 X = 6/5
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5 votes
Mai solved the equation below incorrectly. Identify Mai's error.

5 points
3(x + 4) - 10 = 1/10 (4x + 16)
3x + 12 - 10 = 2x + 8
3x + 2 = 2x + 8
5x + 2 = 8
5x = 6
X = 6/5

User Fisseha Berhane
by
8.7k points

1 Answer

4 votes
3(x+4)-10 = 1/10 (4x+16)
3x+12-10 = 1/10*2 (2x+8)
3x+2 = 1/5* (2x+8)
3x+2 = 2/5x + 8/5
15x+10 = 2x+8
15x-2x=8-10
13x = -2
x = -2/13
She made her mistake when she forgot about the 1/10 and didn’t include it
User SteveSt
by
9.1k points
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