8.4x+3.6x+3.8=9.8 x÷5+0.5=5.5
问题描述:
8.4x+3.6x+3.8=9.8 x÷5+0.5=5.5
8.4x+3.6x+3.8=9.8 x÷5+0.5=5.5
答
8.4x+3.6x+3.8=9.8
8.4x+3.6x=9.8-3.8
12x=6
x=6/12
x=0.5
x÷5+0.5=5.5
x÷5=5.5-0.5
x÷5=5
x=5*5
x=25