1. 5x÷0.8=5 解:5x=5x0.8 5x=4 x=1.25 2. 18+4x=20 解:1. 5x÷0.8=5解:5x=5x0.85x=4x=1.252. 18+4x=20解:4x=20+184x=38x=9.5这样解方程对吗?如果不对,请你写出正确的过程.

1. 5x÷0.8=5 解:5x=5x0.8 5x=4 x=1.25 2. 18+4x=20 解:1. 5x÷0.8=5解:5x=5x0.85x=4x=1.252. 18+4x=20解:4x=20+184x=38x=9.5这样解方程对吗?如果不对,请你写出正确的过程.
1. 5x÷0.8=5 解:5x=5x0.8 5x=4 x=1.25 2. 18+4x=20 解:
1. 5x÷0.8=5
解:5x=5x0.8
5x=4
x=1.25
2. 18+4x=20
解:4x=20+18
4x=38
x=9.5
这样解方程对吗?如果不对,请你写出正确的过程.

1. 5x÷0.8=5 解:5x=5x0.8 5x=4 x=1.25 2. 18+4x=20 解:1. 5x÷0.8=5解:5x=5x0.85x=4x=1.252. 18+4x=20解:4x=20+184x=38x=9.5这样解方程对吗?如果不对,请你写出正确的过程.