方程移项0.4x-0.6x+19.2=14.8小妹我不太懂,初学.
问题描述:
方程移项
0.4x-0.6x+19.2=14.8
小妹我不太懂,初学.
答
-0.2x=14.8-19.2
-0.2x=-4.4
x=22
答
原式= 19.2=14.8-0.4x+0.6x
= 19.2-14.8+0.4x=0.6x
= 4.4+0.4x=0.6x
= 4.4=0.6x-0.4x
= x=22