15.6+2x=23.4的方程该怎么解
问题描述:
15.6+2x=23.4的方程该怎么解
答
2x=23.4-15.6
=7.8
x=7.8/2
=3.9
答
15.6 + 2x = 23.4
2x = 23.4 - 15.6
2x = 7.8
x = 7.8÷2
x = 3.9