(1+6/7)*3.6+(3+3/5)*(7+1/7)+3.6
=(1+6/7)*3.6+3.6*(7+1/7)+3.6
=3.6*(1+6/7+7+1/7+1)
=3.6*(9+6/7+1/7)
=3.6*(9+1)
=3.6*10
=36
16/7×3.6+3 3/5×7 1/7+3.6
=16/7×3.6+3.6×7 1/7+3.6×1 (把相同的项结合)
=3.6×(1+7 1/7+16/7)
=3.6×10
=36
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