3x +4 = 25
3x+4+ (-4) = 25 + (-4)
3× ÷ 3 = 21÷ 3
Mathematics, 06.04.2021 20:10, sedratkawaiah13
Error analysis
Student 1
3x +4 = 25
3x+4+ (-4) = 25 + (-4)
3× ÷ 3 = 21÷ 3
x - 7
Student 2
× ÷ 4 - 5 = 7
× ÷ 4 - 5 + (-5) = 7 + (-5)
4• × ÷ 4 = 2• 4
x= 8
Student 3
51 = -15z + 6
51+ (-6) = -15z + 6 + (-6)
45÷ -15 = -15z ÷ -15
z= -3
Answers: 2
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Do you know the correct answer?
Error analysis
Student 1
3x +4 = 25
3x+4+ (-4) = 25 + (-4)
3× ÷ 3 = 21÷ 3
3x +4 = 25
3x+4+ (-4) = 25 + (-4)
3× ÷ 3 = 21÷ 3
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