(0.8x+0.9)÷0.5=(x+5)÷2+(0.3x-0.2)÷0.3

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/03 13:23:08

(0.8x+0.9)÷0.5=(x+5)÷2+(0.3x-0.2)÷0.3
(0.8x+0.9)÷0.5=(x+5)÷2+(0.3x-0.2)÷0.3

(0.8x+0.9)÷0.5=(x+5)÷2+(0.3x-0.2)÷0.3
(0.8x+0.9)÷0.5=(x+5)÷2+(0.3x-0.2)÷0.3
1.6X+1.8=0.5X+2.5+X-2/3
4.8X+5.4=1.5X+7.5+3X-2
0.3X=0.1
X=1/3

1.6x+1.8=2x+10+x-2/3
1.4x=9/5-10+2/3
x=187/27

(0.8x+0.9)÷0.5=(x+5)÷2+(0.3x-0.2)÷0.3
(0.8x+0.9)×2=(x+5)×0.5+(0.3x-0.2)÷0.3
1.6x+1.8=0.5x+2.5+x-2/3
0.1x=2.5-2/3-1.8=0.7-2/3
x=7-20/3=21/3-20/3=1/3
x=1/3