2/5×-1/7+23/140-1/7×3/4
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Answer:
2/5 * -1/7 + 23 /140 - 1/7 * 3/4
= ( BY BODMAS)
= -2 /35 + 23 /140 -3 /28
= -8 + 23 - 15 / 140
= 0
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