45+13=58
45-13=32
45 + 13 = 45 + (10 + 3) = 45 + 10 + 3 = 55 + 3 = 58.
45 - 13 = 45 - (10 + 3) = 45 - 10 - 3 = 35 - 3 = 32.
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45+13=58
45-13=32
45 + 13 = 45 + (10 + 3) = 45 + 10 + 3 = 55 + 3 = 58.
45 - 13 = 45 - (10 + 3) = 45 - 10 - 3 = 35 - 3 = 32.