2x+2.4=5.6简便计算
问题描述：
2x+2.4=5.6简便计算
答
2x+2×1.2=2×2.8
x+1.2=2.8
x=2.8-1.2
x=1.6
2x+2.4=5.6简便计算
2x+2×1.2=2×2.8
x+1.2=2.8
x=2.8-1.2
x=1.6