7.2x-5.4x=25.
问题描述:
7.2x-5.4x=25.
答
7.2x-5.4x=25.2
1.8x=25.2
x=25.2/1.8=14
7.2x-5.4x=25.
7.2x-5.4x=25.2
1.8x=25.2
x=25.2/1.8=14