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Mathematics, 15.11.2019 23:31 withrowrj

Helen wrote and solved the equation.
x-17 = 56
x-17+17 = 56-17
x = 39
what was helen's error?

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Helen wrote and solved the equation.
x-17 = 56
x-17+17 = 56-17
x = 39
what w...

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