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Mathematics, 07.03.2021 14:00 lukas27

If is valid : a ²- b ² = 117 and a - b = 3, then what is the value of the expression a + b ? A.31
B.33
C.36
D.39​

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If is valid : a ²- b ² = 117 and a - b = 3, then what is the value of the expression a + b ? A.31
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