x+5/6+5/7+4/9=2×125/126
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Answer:
-1 / 126
Step-by-step explanation:
x+5/6+5/7+4/9 = 2×125/126 = 250/126
or, x = 250/126 - 5/6 - 5/7 - 4/9
= (250 - 5×21 - 5×18 - 4×14) / 126
= (250 - 105 - 90 - 56) / 126
= -1 / 126
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