= -2/3 × 6/5 - 1/7 + 3/7 × 6/5​
= 6/5 {-2/3 + 3/7 } -1/7
= 6/5 {(-14 + 9)/21 } - 1/7
= -6/21 -1/7
=-2/7 - 1/7
= -3/7
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