Respuesta :

lets make this unknown number named X
74-32=x-30
42=x-30
x=72
74-32=72-30
Ok, so 74 - 32 = 42.
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Therefore, we need to find something that 30 can be taken away and = 42.
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So, it would be [72], because 72- 30 = 42.
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Glad I could help, and good luck!
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