4x/5-126=5x/8(4x)/5-(5x)/8=126(32x)/40-(25x)/40=126(7x)/40=1267x=126*407x=5040x=5040÷7x=720麻烦请及时采纳回答,谢谢！
解方程:4/5x-126=5/8x4/5x-5/8x=1267/40x=126x=720
