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- 3/8 + 2/7 - ( - 5/11) + blank + 3/8 = 5/11

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Explanation:

-3/8+2/7+5/11+x+3/8=5/11

cancel the -3/8 and 3/8 and the 5/11 on the right and left hand side because they cancel out

which leaves x = -2/7

User Daniel Doezema
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