163+1\13除以41+1\39等于多少

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163+1\13除以41+1\39等于多少
163+1\13除以41+1\39等于多少

163+1\13除以41+1\39等于多少
(123+1/13)/(41+1/39)
=3(41+1/39)/(41+1/39)
=3

163又1/13÷41又1/39
=(160+3又1/13) ÷(40+1又1/39)
=(160+40/13) ÷(40+40/39)
=(160+40/13) ÷40又40/39
=(160+40/13) ÷1600/39
=160÷1600/39+40/13÷1600/39
=156/40+3/40
=3又39/40

(163+1\13) /(41+1\39)
=[(123+1/13)+40]/(41+1\39)
=[3(41+1\39)+40]/(41+1\39)
=3+ 40/(41+1\39)
=3 + 40*39 / (41*39 +1)
=3 + 1560 / 1600
=3 + 39/40

3