evaluate[(-2/3)+(1/2) ]÷[(-4/5 +3/4)]
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[(-2/3)+(1/2) ]÷[(-4/5 +3/4)]
=LCM of 3and2=6
=[(-2/3×2/2+1/2×3/3)] ÷ [(-4/5*4/4+3/4*5/5)]
=(-4/6+3/6)÷(-16/20+15/20)
=-1/6÷(-1/20)
=-1/6*20/1 cancel it
=-1/3*10/1
=10/3
now write in mixed fraction
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