x÷7+4=7.8x÷7=3.8x=26.6~回答完毕~~结果仅供参考~~\(^o^)/~祝学习进步~~~
x÷7+4=7.8解方程x÷7=7.8-4x÷7=3.8x=7×3.8x=26.6
x÷7=3.8x=3.8乘以7x=26.6
x/7=7.8-4 =3.8x=3.8*7=26.6
x+5x七
