add this rational number
7/-18 + 8/21
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Step-by-step explanation:
the Question is 7/(-18)+8/21
=7×21÷(-18)×21. +-18×8÷(-18)×21
=147 ÷(-378). + (-144) ÷ (-378)
=147+ (-144)÷(-378)
=103/(-378).....
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