2/3×(-5/7)+7/3+2/3×(-2/7)
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7 – 6 + 7 – 6 = 1+1=2
8 –6 + 8 –6 =2+2=4
8 –6 +5 –6 =2–1=1
6 –6 +9 –6 =0+3=3
10 –6 +11 –6 =4+5=9
4 –6 +9 –6 =-2+3=1
hence , 4+9 = 1
8 –6 + 8 –6 =2+2=4
8 –6 +5 –6 =2–1=1
6 –6 +9 –6 =0+3=3
10 –6 +11 –6 =4+5=9
4 –6 +9 –6 =-2+3=1
hence , 4+9 = 1
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