pbeasock pbeasock

14-04-2016
Mathematics

contestada

If 571 - 397 = 174, then 174 + 397 = 571. Explain why this statement is true using numbers, pictures, or words.

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emilylovesbooks9 emilylovesbooks9

15-04-2016

it's backwards to check subraction
inverse operation of subtraction is addition, so you add to check the answer

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