163又1/13 ÷ 41又1/39=?(简便运算,)希望各位能给我一个准确的答案,我感激不尽!但是不许乱输答案,第一位算式好像有误(163×13+3)÷(41×39+1),应是×13,而不是×3,两数通分的意思?
163又1/13 ÷ 41又1/39=?(简便运算,)希望各位能给我一个准确的答案,我感激不尽!但是不许乱输答案,第一位算式好像有误(163×13+3)÷(41×39+1),应是×13,而不是×3,两数通分的意思?
163又1/13 ÷ 41又1/39=?(简便运算,)
希望各位能给我一个准确的答案,我感激不尽!但是不许乱输答案,
第一位算式好像有误(163×13+3)÷(41×39+1),应是×13,而不是×3,两数通分的意思?
163又1/13 ÷ 41又1/39=?(简便运算,)希望各位能给我一个准确的答案,我感激不尽!但是不许乱输答案,第一位算式好像有误(163×13+3)÷(41×39+1),应是×13,而不是×3,两数通分的意思?
163又1/13 ÷ 41又1/39
=(163x3+3)÷(41x39+1)
=(489+3)÷(40x39+39+1)
=492÷(40x39+40)
=492÷(40x40)
=492÷1600
=123/400
1.325
163又1/13 ÷ 41又1/39
=(163×13+1)/13 × 39/(41×39+1)(把带分数化成假分数后再乘这个分数的倒数)
=(163×39+3)/(41×39+1)
=(163×40-163+3)/(41×40-41+1)(把多加的减去)
=(163×40-160)/(41×40-40)
=(163×40-160)/1600
=1...
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163又1/13 ÷ 41又1/39
=(163×13+1)/13 × 39/(41×39+1)(把带分数化成假分数后再乘这个分数的倒数)
=(163×39+3)/(41×39+1)
=(163×40-163+3)/(41×40-41+1)(把多加的减去)
=(163×40-160)/(41×40-40)
=(163×40-160)/1600
=163/40-4/40
=159/40
=3又39/40
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163又1/13 ÷ 41又1/39
=(163x3+3)÷(41x39+1)
=(489+3)÷(40x39+39+1)
=492÷(40x39+40)
=492÷(40x40)
=492÷1600
=123/400