show that ( - 8 by 9 * 1 by 5 )+( - 8 by 9 * 7 by 11 )is equal to 8 by 9+(1 by 5 + 7 by 11)
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L.H.S
=((-8/9)*(1/5))+((18/9)*(7/11))
=(-8/45)+(136/99)
solve further
RHS
=8/9+(1/5+7/11)
=8/9+46/55
solve further
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