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Mathematics, 18.10.2019 23:00 amortalstardev

Describe the error in the work shown below.
find an expression equivalent to 18 + 30.
factors of 18: 1, 2, 3, 6, 9, 18
factors of 30: 1,2,3,5,6, 10, 15, 30
18 + 30 = 6(3 + 10)

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Describe the error in the work shown below.
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