答:化成分子式计算
23×14/37+15/37×13
【提取公因数1/37】
=(23×14+15×13)/37
=(23×7×2+13×5×3)/37
=(161×2+65×3)/37
=(322+195)/37
=517/37
=13又36/37
23×14/37+15/37×13
=1/37X(23X14+15X13)
=1/37X(23X10+23X4+15X10+15X3)
=1/37X(230+150+92+45)
=1/37X517
=517/37
=13又37分之36
解:原式=(23×14+15×13)/37=(46×7+39×5)/37
=(322+195)/37
=(370+147)/37
=10+(3×37+36)/37
=13+36/37