Mathematics, 15.12.2021 18:10 mastertrapper
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Anna has solved the equation 32 β 7x = 2x β 3(4x β 5)
Anna's Solution
32 - 7x=2x-3(4x-5)
32 - 7x=2x-12x+15
32-7x= -10x+15
32 - 7x-7x=- Ox+15 - 7x
32 = -17x+15
32-15 =-17x+15-15
17 = -17%
17 -17x
-17 -17
-1= x
Anna's work contains an error. Identify and explain the error so that Anna knows what she has done incorrectly. Then solve the equation correctly
B I J = 5
x, x' Ξ Ξ£
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Answers: 2
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